Hey, how do you guys feel about mixed faction lists? I would like to see things like Chewbacca being a Palpmobile or Luke flying with Vader. What other things could we come up with?

I thought of a slightly different take from what you mentioned. Using scum crews on Rebel and Imperial builds. They would be your mercenaries. Anything that could take a crew could bd assigned a S & V member. I wouldn't mix Rebel and Imperial but adding some Scum into the mix would be interesting.

Consider that the Empire employed bounty hunters and some of the named Rebels were once on the wrong side of the (Imperial) law it would fit nicely.