Kingdom Hearts III Ideas/Suggestions/Speculation/Whatever

Post them up here!

System(s)
Either PlayStation 3 (because of tradition), or the Wii U (for gameplay reasons).

Plot
I can't think of anything right now, but it was stated that it takes place right after Kingdom Hearts 3D: Dream Drop Distance.

Playable Characters

 * Sora - Of course.
 * Riku - also possible.
 * King Mickey - also possible.

Gameplay
It was stated that the gameplay would be similar to Kingdom Hearts 3D: Dream Drop Distance's gameplay mechanics. I would agree with that, plus I would want it more refined and easier to control. Effective, stylish, and easy-to-control attacks and commands would be really great for this game (and the fact that they're supposed to be better than in Dream Drop Distance, that would be breath-taking). Also with the Wii U controller tablet having more than the same amount of features as a PlayStation console controller, I hope that the development team fully utilizes the tablet (and that it won't have sucky camera controls).

Returning Worlds

 * Destiny Islands - A given.
 * Disney Castle - Also a given.
 * Radiant Garden - Should be a go.
 * Mysterious Tower - Getting more important every game so it has to.
 * Keyblade Graveyard - Also a given.
 * Agrabah - They could do so much for that would if they use the King of Thieves' plot.
 * 100 Acre Wood - I think they could use the new film's plot for this world. Plus, I want to see the characters return with their new voices.
 * Symphony of Sorcery - Just think about it. All of the places found in Symphony of Sorcery return, along with new places based off of Fantasia 2000 with the Firebird as a boss (of course, I still want Chernabog)! :D

New Worlds

 * The Jungle Book - Has been cut too many times in the Kingdom Hearts games. It really needs to be in a Kingdom Hearts game now.
 * The Black Cauldron - A really underrated movie and one of the darker Disney animated movies besides the Hunchback of Notre Dame.
 * The Emperor's New Groove - I've always wanted to see this in Kingdom Hearts.
 * Atlantis: The Lost Empire - Mesmerizing movie. Should be in Kingdom Hearts.
 * Lilo & Stitch - I wanna see Stitch make it to Hawaii with Lilo.
 * Treasure Planet - This movie in particular has recently sparked my interest. This movie would be an amazing world to view in Kingdom Hearts.
 * The Princess and the Frog - Think about it.
 * Tangled - This one seriously needs to be adapted into Kingdom Hearts.
 * Wreck-It Ralph - :p

Other

 * Every main Kingdom Hearts game has introduced a new type of enemy. I think it could introduce one more, but I don't think it's necessary.
 * I want the Gummi Ship to return. :p
 * I think that they should return to having Final Fantasy cameos for this game instead of the World Ends with You cameos. Like in the real Traverse Town, there were Final Fantasy characters, but since Traverse Town was in a dream state in Dream Drop Distance, there were the World Ends with You characters instead.
 * Moogles stay. :3
 * No drop gauge (unless you're in the Realm of Sleep again). I want to change character scenarios whenever I want. :(