Any original returning world would have been meh, as I feel like the only one I would be surprised to see return is Traverse Town. All others seem fair game already.
What made the Monsters Inc stuff so exciting to me was how I didn't expect that world at all for this game.
So Frozen, wouldn't have been as hype, for instance. However, you know, its in this leak too lol. It just didn't have any pictures like Monsters Inc. Same with Radiant Garden ha. Treasure Planet is in a weird place wheel I think it SHOULD be in this game, but am unsure if it is so I would have been excited. A Bug's Life would have been the same as Monsters Inc.
The last two, well, both would blow the doors wide open, Ghibli probably too much though tbh. Disney is involved in the creation of the newer Star Wars movies where they legit just publish Ghibli movies overseas. Not really comparable imo. Star Wars is more of a Disney property now, so I do think it could be in eventually. And I would be cautiously optimistic for it, and same with Marvel.
If they started to do crap like add stuff from FOX I would probably be unhappy lol. Even if its something I like...