Right now I'm on the fence with this game. Couple years back if you asked me "what would get you to play 40k again?" I would have answered, "Strip down the rules and make it Star Wars." For various reasons right now though, I'm just not feeling it.
That being said, the one thing that would pull me in in an instant would be custom commanders a la the Space Marine commander from (ugh) 40k. One of the few advantages of unbuilt minis over unicast, is the ability to build something unique. With the card upgrade system we see in a lot of FFG games, in a way, they're already set up to do this. If you start with a basic "class" (force user, trooper, scoundrel) card and slot in your weapon and abilities, bam, something unique and personal.
I like Luke and Vader and all that, but to me, a minis game is all about building your force. If they took that a step further and allowed you to build your Star Wars commander, I would be all in.