As much as I'd like to see a lot more worlds, I think Nomura made the right call for having less worlds. I'm hoping for around 10 worlds. We pretty much have four confirmed, those being Hercules, Big Hero 6, Tangled and Toy Story, so we may see around 6 more worlds in the future. I dunno if they'll bring back any of the old worlds, like Agrabah, but I'm hoping for a lot of new worlds.
Let me say the ones I'd like to see and maybe possible:
- Frozen;
- Atlantis;
- Treasure Planet;
- Princess and the Frog;
- Wreck-it Ralph.
And here are two that I want but may seem impossible due to its recent releases:
- Zootopia;
- Moana.
And then here are some that are from Pixar, since we never know if Toy Story is the only Pixar Disney Movie to be in the game:
- Monsters, Inc.;
- The Incredibles (Though having two Super Hero worlds would be ridiculous);
- Wall-E;
- Brave.
And then there's the possibility of a Marvel or a Star Wars world, but that would be hard. It is possible though.
There are many choices, but who knows. We may be surprised.
Here's some news. Appearently, Big Hero 6 was the last chosen world to be included in Kingdom Hearts 3. Now before you panic, no, it's not the last world that's gonna be revealed, there is gonna be more. It was during development that Big Hero 6 was the last addition to Kingdom Hearts 3. They have already picked other Disney worlds first and Big Hero 6 was the last addition. In other words, the latest disney movies that came out won't be included in the game, in other words, no Zootopia or Moana . But we can be happy knowing that Frozen and Wreck-it Ralph may be included.