I don't want there to be too many Keyblade Wielders revealed. The fact it seems like there is an overload with having Sora, Riku, Kairi, Mickey, Yen Sid, Eraqus, Ventus, Xehanort, Terra, Vanitas, and Aqua all have Keyblades. They can all keep to themselves...but it would be nice to know why they do. Probably because of the Keyblade War and they don't want to go through something like that again.
I'd like the villain not to not care about the Keyblade, for once. Sure, it is important, but the fact that the villains take an interest in the Keyblade makes everything so repetitive. "Keyblade! I must have it! I will manipulate Sora for our plans! I will manipulate Riku for our plans! KEYBLADE!"
Even better, have villains who aren't villains at all. They think Sora and people with Keyblades are evil. Or something. Just, not the typical villain.