I'm a fan. I've kinda gone off it a bit after KH2 with all the spins-off [I don't mind some of them like Birth By Sleep, but after waiting all this time for a KH3, there's only so many times you can hear Simple and clean in those side games before the brain shuts down @_@]
Honestly, I'm hoping for a three player title you can play online/offline. Since hey, Donald and Goofy follow Sora everywhere in KH1 and 2, so why not Riku and Kairi instead and play with your friends? I wouldn't mind some new disney worlds, or some pixar ones. But still, I would like it to keep the mature approach it's been going along with.
Storywise, I dunno. The whole thing is really confusing. I'd like for it to come together and make some friggin sense.
Oh and erm...A NEW THEME SONG! PLEASE! :'(