Well, one thing I would do is this: have the different Disney characters now do meet-n-greets in the pavilions of World Showcase, themed to the countries from whence the stories originated! For instance, you can meet Pinocchio and Jiminy Cricket at the Italy pavilion or Snow White and the Seven Dwarfs at the Germany pavilion! This will also be an ideal way to find rarer Disney characters, like Bernard and Bianca from "The Rescuers", the title character from "Dumbo" or Panchito and Jose Carioca, as well as Donald Duck, from "The Three Caballeros".
This idea actually originated in how they added characters to Small World.