Correct me if I'm wrong, but in my humble opinion putting FF characters into Disney worlds is plainly wrong. They lose their personality and don't play a big role and are destined to end up as a wretched due to not having any story background.
Couldn't they put worlds like Midgar, Kefka's Tower, Terra, Bevelle or the Moon into the game?

I mean, Disney characters get focused like this as well, so why don't they try to balance their choice?
Oh well, maybe in the upcoming games, or more precisely, HOPEFULLY in the upcoming games.

Never the minder I'm really pleased they put Zack into the game. Even if it's only due to Crisis Core's financial success.