Like what Zarga said, I don't mind them being in the game as long as they stick to the supporting roles that they have. I'd be more happy to see a new Disney world then to see a Midgar world that I have to plow through; it just seems more fitting at this point in the story to continue with the Disney worlds. However, I hope they add some new story content into them from KH2, it was more like a rushed "hey hows it going oops new boss hes dead see ya later!", which I wasn't too thrilled about. More story in the Disney worlds please SE!