The Black Cauldron needs to happen as a world. It would fit with KH tbh.
Would also like Atlantica done RIGHT. KHI was messy with the controls and they made it a joke world in KHII. Fix the control scheme and have us underwater and on the outside world like the beach, town, etc and it'd be fantastic.
Would also welcome the return of Castle of Dreams, Enchanted Dominion and Dwarf Woodlands since those were my fav in Birth by Sleep
Don't want: Agrabah. One of the few worlds that bore me to death.