2. Bonnie's Room (Toy Story)
Although Toy Story has never really been touched upon in a Kingdom Hearts game, Kingdom Hearts experts may know that Woody and Buzz are not total strangers to it. They were originally intended to be 'summon' characters in Kingdom Hearts II Final Mix. Sadly this never actually happened, but on the bright side it shows that Square Enix is not against using Pixar's flagship masterpiece. And the timing's never been better. At the end of Toy Story 3, the toys have a new owner and a whole host of new toy friends, and Pixar is keeping the characters alive in short film form. Toy Story is still extremely relevant (I can't imagine a world where it isn't) so Kingdom Hearts taking a journey to Bonnie's room could be a magical experience. Also we'd get to see Sora as a toy, which would be amazing.