And if you think about it, the almighty Kingdom Hearts 2 Final Mix which was released years before Birth By Sleep and Days threw in a TON of stuff that was basically sequel bait... for HANDHELD games. Sometimes I think people didn't get everything on their laundry list of demands for KH3 and default to "it's trash" because the long time between KH2 and KH3 somehow justifies "perfection" in their eyes.
Honestly, I think you've nailed it. People didn't get what was on their list of things that must absolutely happen, and think the game is such a terrible addition to the franchise, when it's not. Sure, it sucks that some expectations weren't met, but it's really not all that big of a deal in the grand scheme of things. Most characters have a happy ending, and the ones who don't either had it coming OR their story isn't done yet. People had gripes with KH2, BBS, Days... DDD released 7 years ago yesterday, and look how many people wanted to burn that game to the ground. Of course, it'd be great for KH3 to be Nier Automata or Spider-Man PS4 status. But even if it's not, that's fine, cause it still accomplished everything it set out to do. Like I said earlier, people can't use the "But KH2 was conclusive!" argument because there were clearly unanswered questions that had to be addressed, and they certainly weren't just going to leave that up in the air. The only reason KH2 ended the way it did is (my guess) because had KH2's sales tanked or Nomura didn't want to do it anymore, they could just leave it at that.
I actually liked the build for the box. Having Disney characters Maleficent and Pete go after it made me think it was inconsequential, so I was curious but didn't think it would amount to anything more than a Maleficent/Pete boss fight. When discussion about the box faded out and we actually see Luxu with it at the end... that was a nice surprise for me and made me care more and made me think Maleficent will become more relevant in the next game. I mean, if we fought Maleficent in this game and finished her off for good... would this be the right time? The focus was really on the Organization, it would have felt flat beating Maleficent amongst all the other stuff going on. I rather deal with her without the immense weight of The Organization on the story's back.
Exactly, and that's why I didn't worry about it either. The Organization looked for a box, but it was inconsequential in the end when it came down to what was going on at that point in time. Of course I want to know what's in the box, but they've also gotta give Pete and Maleficent something to do as well. Once Maleficent said "the box doesn't exist... yet" and pointed out that a Keyblade War was on the horizon, that should say that she knows a LOT more than we think she does.
Actually this was a KH2 complaint too, because you had Maleficent reviving, but you only had to worry about Organization XIII and maybe Pete a couple times. "Too many antagonists". Plus Maleficent has been looking for the book since Coded, if that's connected with KHUX, why touch on it in KH3? Wouldn't that make it even MORE "sequel bait"? But it is what it is.
Out of all the chaos and hate that KH3 got, the thing that bothered me the most was that there were KH fans who finished playing KH3 and did not enjoy it or did not feel overwhelmed with (good) emotions. I felt really sad about that because as a longtime KH fan I know how much KH3 meant. All I hope for now is that ReMIND can do to KH3 what KH2FM did for the people that hated KH2. I really just want KH fans to find something in KH3 that they like, not for KH3's sake, but for their sake as fans. I can't even imagine how devastated I would feel if I played KH3 and thought it was garbage.
In the end, people will like and dislike whatever that gets released next. Because now, you're going to have fans thinking they actually released an incomplete game and are trying to sell it back to us in DLC format (when they literally sold you THE EXACT SAME GAME in the past, with new additions... At full price). They could have Kairi knocking Xemnas around the Keyblade Graveyard with one hand behind her back, explain Xion's revival, Namine coming in to save the day with a machine gun on some Laguna Loire shit, let us explore Scala in detail and even give us a trailer for Verum Rex... That's still not going to be enough for some. Everybody's entitled to their own opinion in terms of how KH3 wrapped things up. But personally I feel that base KH3 surpasses base KH2, and it's not even close. It is what it is though.
It continues to amaze me how KH2FM, a game we got in the west almost a decade after its Japanese release, managed to wipe clean so many people's memory of vanilla KH2, so that they firmly believe KH2 released as a perfect game and FM only gave them more of that perfection. It's complete bonkers.
It's crazy. I LOVE KH2, but it wasn't this holy grail of a game people make it out to be. It had its flaws, but it was a charming game that introduced us to a LOT more in the universe than simply Sora looking for his friends and going back home.
Most of the reasons people even love KH2 is because of the Final Mix stuff. The Other Promise wasn't even an original KH2 song, and neither was the Roxas fight. Or Limit Form. Or countless other things. You can't even play the original KH2 unless you have a PS2 copy or emulate it, so it'd be interesting to see how fans in 2019 would feel about the vanilla version.