The saddest part is Square usually uses the popular fan favorite movies that do well in box office. And most of them are already used up. So even though there is still a ton of movies to use, the likelihood of some of them making it in is slim to none. I think The Black Cauldron would make an amazing world, but Disney views the film so negatively it will probably not make it in. It would make sense to add worlds that correspond with the overall story line. Lilo & Stitch's actually world. Dumbo and Bambi's worlds before becoming summons. Merlin and the dalmatians' home worlds. These would be new worlds and still relevant to the overall Kingdom Hearts saga plot. It would tie up those little lose ends since were already dealing with the end of Xehanort. Plus, why has Sora never been to half of the princesses worlds? Return these worlds, that are relevant to the main plot, but aren't overly done already. Then add other popular films like Frozen, Pocahontas, the Jungle Book (finally!) to end it out.