Hello,
and thanks again for the nice comments!
Now it's time to give some answers...
Besides, the Naboo-N1 and the Bongo Sub, which you already have seen, there are no other Star Wars models made of other sets currently. But there may be more in future.
Well, it's a bit of both. You can't force creativity. The more time you spend with a set, the more you begin to see the potential of the pieces themselves, and not just the set. Then you suddenly think what it *could* be. And with a little patience and some skills it *might* really work out then.
See you soon,
~ Christopher