It's been confirmed that as far as Roxas and Namine are involved, being "assimilated" into Sora and Kairi will take a while. Hence they'll be around for KH3... suffering quietly in the meanwhile.
One of the things I'm most curious about is how Roxas will react to Riku who ended up bringing him in.
As for RokuNami, hell no. They did in a way have more proper interaction than SoKai, which is sad since they had five minutes of proper interaction or so, but it was far too plot related and intense. Them being Nobodies aside, Roxas was clinging to the only person who even acknowledged him anymore and didn't really try to make him disappear, only she on her part was clinging to the last part of Sora she could possibly reach for, in light of Sora forgetting her and DiZ wanting her gone.
Could something have happened? Duh, he's a Sora and she's Namine, it's almost meant to be. However, Sora being around still and the circumstances kill this with fire.
RokuNami at the end of the day is nothing more than something they could try and excuse SoKai with, because hey, Sora and Kairi promised to see each other every day for Roxas and Namine's sake, right?
How lovely they're forgetting that would be the second part of Sora that made Sora be with Kairi because both parts of Sora want Namine. Lovely.
tl;dr I find RokuNami to be repulsive by concept.
Here's to hoping RokuXion will be more than just a SoKai excuse, though right now I'm doubting it.
Kudos for paying attention to something other than her cleavage. However, if Kairi'd get kidnapped with Sora and Riku out on a journey, it probably means it's finally because she's a PoH and not necesarilly to get at them, so I've no qualms with that.
Maybe she'll finally learn that despite the immediate danger, leaping into CoDs is not always the best option.
I don't remember against which Organization member it was. I think Saix since against Luxord, he had the cards make them all disappear aside from Sora. So when Saix or Xemnas forgot which let out an energy wave, Riku jumped in front of Kairi and served as a human shield.
I think now we all realize why the instant he had Sora as backup instead of Kairi, he didn't let her fight, and why he gave her the Gayblade to begin with instead of just fight off himself - he'd have gotten killed trying to protect her.
For Namine, drawings = Memories. So it makes sense that she'd draw the Memories she made for Sora, hence the picture of her along with SRK as children - which was what Sora 'remembered'.
Here. XD
Heartless = the Hearts themselves. Once a Heart is taken over by the Darkness it harbors within itself, or is snatched away by another Heartless, the Darkness latches onto the Heart and strips it of is Memories - hence why they're able to be transferred to the Nobody; hence why when Kairi purified Sora from being a Heartless, he didn't lose his Memories. He didn't have the time to lose them.
Anything more specific?