Fellow nerds, I request your assistance in developing an army-wide rule for Chaos Space Marines. I have several ideas (your opinions of which I would love to have) and I am very eager to hear any thoughts on how you would do it.
The purpose of this rule is, at its most basic, to represent the Black Legion and other "middle-ground" Chaos Space Marine warbands. This rule would then be replaced by other rules for other notable forces, in a similar fashion to what happens in the Space Marine codex, or by Marks of Chaos, as I'm of the opinion that Marks should make a Marine better at something different, not better all around (which translates to remaining the same cost but having a slightly different application).
The idea I've been working with is Death to the False Emperor! which basically gives all applicable units Counter-Attack and Stubborn as ways of encouraging close range fighting and highlighting the ruthless (often psychotic) determination that the Black Legion has regarding vengeance.
Anyway, hit me with your thoughts and please explain your opinions.