So in contrast to "Imperials/Rebels/Scum only" cards:
A maybe interesting card type would represent anti-faction cards. It would probably go more into the direction of niche cards, but could still be fun (and atmospheric most of the time)
Example:
When attacking a scum and villany ship...
When defending against an imperial attack...
When overlapping a rebel ship...
(It should of course not be a very common card type, but mabe few of them)
Thoughts?