We got AT-ST's in this mutha.
Anything's possible.
Personally for me, I think since the theme of 4 seems to be about growing up (what with the afterlife being the real world, maybe Nomura can explore this theme by showing the properties/companies Disney outright acquired? Like show the business side and make a statement about THAT Disney (since the Kingdom Hearts games commentate on nostalgia and all that).
Like we already got Star Wars confirmed, why not go above and beyond and make Muppet, Fox, and MARVEL worlds. Also more Pixar worlds plz.
Oswald the Rabbit is already on top of Nomura's list of characters he REALLY wants to get in the game and he was owned by Universal. Maybe recreate Epic Mickey's storyline where Oswald is like "I've seen the real world and I've grown cynical about MY world. Why should I come back?" or something like that. It seems like the game is alluding to that type of storyline.