Great Mouse Detective would be pretty awesome, with Robin Hood close behind. Maybe a 101 Dalmations world (I don't remember the story enough to know if that would work).

I agree that using live-action movies were kind of off and ought be avoided.

As for Pixar games... we could totally go for Wall-E, right? You would help Wall-E and EVE out and eventually fight the autopilot as a boss so they can get the thing that accepts the plant open up. And who wouldn't want EVE as a party member??