[@Lucidnonsense]what do you mean by "morally grey"?  I don't care if we aren't the good guys, as long as we aren't quite on their level.  It's hard to balance the two sides, so if we are just not quite as bad as them (maybe we won't target innocents without a good reason), I think we can balance it a be better.  For example, we are Saul's group in Rogue One.  We can, however, have a "good" cell of NPCs in the story for contrast.  Maybe they attack a military base as we are slaughtering everyone in it, no quarter given.