I really, really, really want Star Wars to stay the hell out of this series.
As if this franchise doesn't already have enough movies, TV shows, novels, and of course games to call its own, now it has to invade Kingdom Hearts as well?
I'm sick of it all and I want it to go away. If I never hear "The Imperial March" again, it'll be too soon.
Putting my own biases aside, I don't think it can be done. The SW universe is too big, too involved, to be encapsulated into a single world within KH's universe boundaries and rules. It's a story that crosses multiple planets (something already sticky when we have the world order) and spends a lot of time in open space. How do you it? Limit it to a single planet? But all the characters hail from different parts of the galaxy, do you just not mention that? Are all the planets mashed into one world?
Whatever compromises you make, I'm almost 100% sure that Star Wars fans wouldn't be pleased with the results.