I like the idea but it won't happen.
Here's to tell how it's a fake.
-the crazy size of Mario's keyblade
-how Sora and Mickey are in their KH2 models (usually for a new game they use new models for the game)
-Mario looks a bit off from the other two.
-Mario's also shorter then he normally is (normally he's taller then Mickey)
-the mushroom is definantly stripped from Mario Kart
Other then that it's pretty good.