I'm not too concerned because my hopes aren't that high either way, lol. The je nais se quois of Kingdom Hearts is the first-hand player experience of traveling to Disney worlds, fighting the bad guys, and hanging out with Donald Duck. Strip that interactivity away, and you've stripped away my personal investment anyway. The movie/show is just a thing to watch and then walk away from, knowing it has no bearing on the experiences that hold the most value to me.
People become too inundated in takes, discourse, what isn't in the movie, the movie being typical corny modern Disney shit... I can definitely understand and empathize with people not wanting this movie to bastardize their baby, but it's not like it'll overwrite whatever your favorite KH game is. I just think it'd do you all some good to make peace with the possibility that Xion, Eraqus, Urd, and Nameless Star will be omitted and unmentioned in the flick.