What has Lea, Terra, Ventus, Roxas, Xion, or Namine accomplished with respect to the overarching Xehanort saga? Nothing. And these are just the protagonists.
They provided Xehanort with a few vessels to use as puppets which he could have found elsewhere. Their stories have had little to no impact on Xehanorts plans and have served as minor inconveniences to him at best. Even Ventus, when revealed as a union leader, has done nothing for the modern story of this game except not form the X-blade for Xehanort and serve as a Guardian of light (which Xehanort could have also found elsewhere). The same goes for the rest. Terra literally just gets norted, all Namine does is help get Roxas back to Sora which could have happened just as quickly by killing him, and Lea doesn't really accomplish anything for either side.
The only characters in this series who are allowed to make an impact on the plot are the ones that have made huge sacrifices, and those sacrifices were primarily just to buy time. Aqua was significant because without her Ventus would have been made into the X-blade, Riku was significant because without him Sora would have died, the only significance Sora really has throughout this whole series is defeating Xehanort and the other bad guys - but whether this is a result of his own strength or the master of masters manipulation is up in the air. And the only choice Sora is really allowed to make is to sacrifice himself to save Kairi.
The only reason Kairi is significant is because she guides Sora back from the dead so he can beat up the bad guys. Kairi has done nothing but serve as another pawn for Xehanort to take in creation of the X-blade which he manages to do in the end anyway.
I mean its fine for you guys to like or dislike certain characters, but if you're going to act like some characters are bad because they don't directly affect the plot of the story then be consistent about it. I don't know why you guys personally like to play these games but I have greatly enjoyed the overarching plot as well as the self contained stories. A character doesn't need to be significant to the story for you to draw significant meaning from their experiences.
You broke down some (not all) of the characters' plot importance to the most basic level, and yet could only manage something with Ven as an argument, rendering your claim [and MrFranklin95's] faulty. What I wrote was:
And since you do keep saying that argument can work with any other character, I'm curious. I'm curious to see which character doesn't affect the overarching Xehanort saga or stuff outside their base game, and can be taken out without having the series have, one, an entire rewrite, two, a stark change, and three, almost an overhaul of themes and organizations and concepts (like Nobodies).
Let's start with
BBS, the game that, you know,
introduces the main antagonist of the Dark Seeker Saga for the first time and explains how things turned out at the present Kingdom Hearts timeline and why. Already, this makes it the most important addition in the series that's not numbered. And even then Nomura basically called it "0".
@MrFranklin95 (does tagging work here...) stating that it wasn't needed is wholly nonsensical and/or wishful thinking. Not that it was your declaration to make, so I'll focus on your reply.
Since you covered Aqua,
Ventus thwarted Xehanort from his plans directly, stopping Vanitas from fulfilling the fusion and causing the χ-blade to become unstable. It's the critical key to open Kingdom Hearts and set the universe to turn to void (or whatever the case was with Xehanort's goal). With the battle between Vani-Ven vs. Aqua and Mickey, it was destroyed, rendering the entire set up a failure and pushing back Xehanort enough that we had to wait for KHIII. Xehanort could have chosen another vessel, but Xehanort chose vessels that were easy to manipulate. And were Keyblade wielders. If you can prove that gaining vessels is that easy and he could have used anyone, let me know where he could have found other students or wielders around. Reality is you can't.
And the decisions made by the characters are their own, so unless they will have the same sense of justice and bravery, things turning out just the same would be a roll of the dice at best. And now Ven has some role in this whole KHUx situation.
Terra is also crucial, because his blindness also brought these events about, and it was through him that Xemnas and Ansem SoD exist because Xehanort needed a new incarnation to survive. And Xemnas and Ansem SoD are the villains in both KHI and KHII respectively. Terra simply served the antagonists, not the heroes. And it was his Lingering Will that saved them in KHIII. Taking any of this out falls into either the rewrite or overhaul spectrum.
The BBS trio are relevant.
In a similar manner,
Naminé is also influential in the villains side, if unwilling. Her being forced to mess with Sora's memories causes consequences, and puts him into a deep sleep to fix it all. A sleep that he needed to wake up from, because he was needed to stop Xemnas from completing his faux Kingdom Hearts. He would have accomplished this ploy otherwise and it would change the world of the game that we know. While I'm not a huge fan of Sora being painted as this Jesus and being so important that everyone has to make certain he's okay only due to "friendship powah" and selflessness, that's how this series works, so.
It's also the same reason why
Roxas is significant, though that's arguable, which is fine. It doesn't cause me to lose sleep at night and wake up in nightmares. Still, Sora could
not and would
not wake up without half of him being returned. It doesn't matter if Roxas was killed for it or returned,. He
had to be gone because Sora's sacrificial act of love in KHI brought this whole complication into fruition. That means, for Roxas and Naminé to be taken out, things would require a rewrite of KHI. Or just not have the sequels be the way they were. The KH series as we know it would not exist. Naminé's impact also isn't stuck in CoM. She's important for Sora's recovery and Roxas' acceptance of his fate for him
to recover in KHII, she busts Kairi out of jail, conjures up the Corridor of Darkness to lead them home, which brings Kairi home, which in turn brings Sora and Riku home from being stuck in the Realm of Darkness. There has to be a character to do it. And then Naminé goes ahead and saved everyone's asses at the Keyblade Graveyard, preventing a repeat by summoning Lingering Will with
her abilities.
Her and
Kairi are similar in that their existence is necessary because of their powers. Kairi was able to bring back Sora from being a Heartless, allowing him to roam, stopping catastrophic events from happening by virtue of Sora surviving. Her letter was capable of opening a Door to the Realm of Light, saving Sora and Riku from being stuck at the Dark Beach. And in KHIII, had Sora retain form and not disappear enough for them to turn back time and "change the tides", in Naminé's words.
To switch any of this up could cause unforeseen narrative dips. In fact, the series
as it is would not even be. If it's not, for example, Naminé or Kairi themselves, there has to be something there, for that sort of role or object, so things could end the same.
Axel/Lea, you could go off on. I'm in the camp that believes he shouldn't have been elevated to main character status and was way more interesting and less of a joke in Castle Oblivion. I used to adore him, but now he's become a caricature. Nonetheless, he is influential because of his actions in Betwixt and Between (?) and was the reason Naminé was able to stand up to her captors and stop Sora from becoming a puppet by letting her go. Half the castle members wouldn't have been offed as well. Either way, make of him what you will. Like Roxas, he's arguable.
Those two aren't the "majority of the cast".
I can't speak for breaktheice, but I'll speak for myself about Xion. KHII being released first and her not having been thought about is an automatic detriment to her significance. There was no mention of her, no whiff of her, she did not exist because she legit didn't. If Days or her were taken out of the equation, KHII
still says that Roxas would have left and things would have transpired how they did no
matter what was chosen to be the background reason of why that was. Despite that she's the reason
now, doesn't change the fact that she didn't
have to be. That's the point about her being unnecessary.
And Days itself works into making her easily removable. To make sure there are no plot holes with KHII, she was written to be forgotten, so no one remembers her or questions their decisions. This is important -- no one, not even Riku, feels something missing, not a single gap in their memories that would have brought them to wonder
why they did what they did. Meaning the choices they took made sense without her needing to be there for them. He would have gotten Roxas regardless on Diz's orders because ultimately, it's Roxas that was essential to Sora waking up. Xion disappearing didn't wake Sora up, it was Roxas disappearing that woke him up. Roxas feeling Sora, "why did the Keyblade choose me? I have to know", and the lack of answers is why he left.
KHII answered that question. What else? A more in depth look at replicas? That only works for Xion so the audience can empathize with her. It's nothing that Riku Replica hadn't covered in CoM that could be used for KHIII when it comes to pure technicalities. In fact, he was possibly the better replica in terms of what it needed to do. Copied Riku's powers/abilities, looked like him, and was constructed of Riku's data. And DDD confirmed, I think, that empty vessels can house hearts, using Nobodies as a case. KHIII went over that again in bits. Riku Replica
alone provides what's needed in terms of lore. Coded dwells more into the Data world and how it works (since data from Twilight Town was needed to help bring Roxas and Naminé back, and the munny Riku took from Roxas from the data Twilight Town actually became real in the real world, in KHII), and...that whole thing was because of Naminé too.
Xion provides
nothing innovative,
nothing unique (aside from her gender flips), no concepts that hasn't been covered in other games by
other characters.
It's hilarious to me how you guys calls Roxas boring, and yet Xion's story is basically
a rehash of his own in the KHII prologue except with some Tragedy™ to pull heart strings and dragged on to cover a full game's time. With a dash of Repliku by being a replica. The rest is filled with clock tower meetings and world exploring. And Roxas being confused and whining about being confused. Fun.
And in the end, that's exactly it. Whether Xion is significant or not, it's her
addition that causes my disdain. This includes her forced tragedy, as if she's the only character that has ever suffered and needs the sentimental, pretty, crystal "death" and overly long French named theme about her sadness/sad fate to hammer down just how tragic she is. If the game didn't convince you enough I mean. Roxas was robbed of being active in this game for the sake of her having something to do to justify her implementation. These aspects, among others, is the reason why she didn't resonate and why I will never care for her. So really, it's how 358/2 Days handled it that led to my opinion. She joins Ventus in the "characters I just don't give a single shit about". And I already talked about how Ven has played a notable role. If anything, her being unnecessary is more of a side annoyance because I didn't really have to deal with her inclusion.
You either don't care that Xion is insignificant or you do (this comment doesn't just pertain to you either, by the way). These posts consist of arguing how every character matters, and then arguing that even if they don't matter, it's irrelevant to what they bring about with their arc and emotional pull. So...what is it. You can like Xion for that, yet you also have to respect that others won't and don't feel the same way about her. What changes with the effort?
breaktheice, despite all of this back and forth, isn't going to like Xion or change his/her mind about her uselessness. Apparently. Let him/her dislike Xion for that, I don't see what's the problem honestly. That's his/her perception on stuff. You don't need to
get it. They obviously don't care what you have to say on the matter, I mean...