Kingdom Hearts graphics, at least in my eyes, has alwasy been about an artistic style. Meaning really no matter what console it goes to, as long as it retains that artistic style, it'll be fine. By brining it to the PS3 though, and beefing it up with super real graphics, wouldn't ya lose that artistic style. I always credit a game first when it chooses to do something new rather than something everyone else does. I'd personally rather see KH stay unique with its artistic style than go the way of Final Fantasy. Maybe I'm weird for thinking that but oh well. If by going to the PS3 its style will change then I don't want it.
Ultimately though I'm ensured that style will stay with the Wii, and an opportunity to hopefully see some creative controls. But really it wouldn't matter that much to me where it went, but oh well.