My kids have recently gotten into Playmobile. While I was assembling the castle for them, it suddenly dawned on me that Star Wars Playmobile sets would be fantastic. You'd never have to complain about a lack of playsets. They include accessories galore. Stormtroopers and the like would have snap on armor. There would be tons of playability for kids. It would be a really great marriage of toys and licensing.
The only drawbacks would be that I don't know how, or if, they would do any non-human characters, and all their human characters would essentially have that same face that all their figures do.
Lego got around the alien thing, though I think those look a little weird, and manage to use the same yellow face variations sucessfully on everyone else, and the prices for sets is about the same, but I think the Playmobile sets would be better.