If there's one Marvel world (Aside from Asgard, maybe) that would fit perfectly with the game, it is this. I am not just saying it because I love the movie. Sora can learn much from Hiro's story. If Square Enix can't do it for this game, maybe next saga or even DLC. Maybe they can at least make Baymax a summon, and I think the keyblade can be Microbot themed. But San Fransokyo isn't the only superhero world candidate. So is... whatever world The Incredibles takes place in.