The problem with Disney is that their female leads are almost always princesses. And some of these princesses are just badass, like Mulan and Jasmine, but some of them exist only to find their man. Most Disney movies are usually essentially romantic fantasy, emphasis on the Romance. Pixar tends to be a bit more broad in its appeal and genre choice, but the only time I can even think of a female main character of theirs who was really strong is Jessie from Toy Story... and she was really second fiddle, although frankly when you have a sequel that comes with the territory.

I'm hearing great things about Eve in Wall*E though. Almost makes me want to see it.