I thought about this possibility, too. There seems to be a sizable Japanese fanbase for Star Wars but maybe I'm wrong. I'm more excited about the possibility of Disney maybe finally doing something with Monkey Island. (Tales was good but not as good as I think it should have been.)
I don't think there's much of a problem with going back in time some. Isn't AC3 suppose to finish the current storyline? Maybe we'll get a new protagonist and that will allow them to use an earlier time period. Anyhow I do think an ancient China setting would be very cool.