I think it could work. I remember being skeptical about the Tron world and it was awesome. Mowing down droids and having lightsaber-keybalde duels sounds pretty aweomse tbh. Though I say this from the perspective of someone who hasn't played a Kingdom Hearts game since Chain of Memories and who consequently gives zero smurfs about the story at this point. Just make it fun. And if they decided to go so far as to put Star Wars into the game, I'm sure they'd put extra effort into making sure it didn't suck.