I agree with you, but just to be completely fair:

Mulan has a Mulan 2
Beauty and the Beast has its spinoff.
Hercules has a boatload of mythology to go along with him (assuming they can depict endless rape by Zeus as child-appropriate)
Tarzan has a sequel
Aladdin and the King of Thieves
Halloween Town is used up, but there are a series of other movies of the same animation type
Atlantica with two sequels
100 Acre Wood (LOL like you could use up the stories in this series)
Port Royal and its two sequels (as though I have to link this)
Pride Rock has multiple spinoffs and sequels
Tron would most likely be unaccessed in KHIII or its spinoffs
Alice in Wonderland was dropped

Also, Disney != Japanese anime such as Naruto or Samurai X. To even obtain those rights of use would be a massive investment, and also smacks of personal ignorance that you might even fathom it. Also, Kenshin would totally own Sora any day, and he would never be a Heartless or Nobody, since he's got his own thing going on (Battosai and Saito).