I think out of all other worlds than Hercules, Winnie the Pooh is most likely to return. Again.
Also, a while back, it was
pointed out that Union Chi has some new heartless that look designed for specific worlds that don't exist... yet. The images can't be viewed thanks to Photobucket, but you can still see them in
this video. The Heartless really look like they belong in Frozen, Wreck-it Ralph and Atlantis. I agree that these could suggest that their corresponding worlds might appear in KH3. Maybe not all 3 of them will appear, but I'd say it makes them a lot more likely.
So say that there are 10 Disney worlds rather than KH2's 12. Here's what I think we'll get.
- Hercules
- Big Hero 6
- Tangled
- Toy Story
- (Likely) Winnie the Pooh
- (Likely) Frozen
- (Likely) Wreck-it Ralph
- (Maybe???) Atlantis (Could be a replacement for Atlantica, but I agree this is still a weird choice for KH3)
That leaves room for only 2 more Disney worlds. I'd guess Star Wars, Jungle Book or another returning world like Agrabah maybe, though I'd love to see The Emperor's New Groove, Treasure Planet, Pocahontas or Fantasia instead.
I would like an FF world as well, and would find it hilarious if it turns out to be a XV/Versus-related one.