It looks like there might be two levels you can unlock by sending out salvage droids. Am I correct in thinking this.
It looks like there are 2 levels per planet (I can confirm 3 of them personally, and other threads have confirmed the others):
Endor: Endor Arms (residential) & Ewok Adventure (recreation) Kashyyyk: Wookie Arms (residential) & Kashyyyk Shack (retail) Csilla: Csilla Apts (residential) & Chiss HSP (service)
There is a new imperial level, Overbridge, but thus far I haven't seen anyone with solid info on how to unlock it.