She probably will considering she's a PoH but in all honesty, I don't mind DiD characters as long as they serve a purpose and it's realistic to the character. Like I mentioned before, a character getting in trouble can provide excellent character development granted that said character is aware is weak and wants to do something about it which Kairi does. She knows she's a liability and that she gets in the way sometimes because she's weak and that why we got the whole "this time, I'll fight!" blah, blah, blah. So long as her being a DiD actually contributes to her character I'm down with it.
Speaking of, I think they should move away from Kairi being Sora's "motivation" a bit. I never really bought it and saw it more as a way to keep Kairi's character relevant than it being something that Kairi was needed for.
? But thats was the whole point of the first game. And it is always mentioned that she she is the most important person in the world to him, if she wasnt, it would change the entire games story.