Sorry for the double post, but here's a MAJOR update on this game, including stuff from Game Informer:
http://www.gonintendo.com/viewstory.php?id=100611
The characters and ideas all look cool and interesting, including seeing Pete in there, but apparently, the story isn't exactly what EuroGamer made it out to be - that is, instead of Oswald unleashing the Phantom Blot on Mickey's world, Mickey accidentally unleashes the Phantom Blot on Oswald's world. Mickey returns to this word and is captured by the Mad Doctor, from the 1933 cartoon of the same name. He escapes and then... Well, it's kind of up to you from there.
Yes, it seems this game, like many others before it, has this whole "moral choice" theme where you can either act like a good hero or an evil jerk. No offense to the guys making it, but this idea has been played out so many times, it's actually ridiculous to see it here. But then again, I think they were trying to play to how Mickey used to be. I mean, have any of you actually seen
Steamboat Willie? He was kind of a bastard, mostly due to abusing animals. In a way, he's kind of like what Donald Duck basically is now, so I guess they wanted to incorporate that into this game. Still, you can choose to be a good Mickey or a bad Mickey, though it's yet to be seen if things can only go either way.