I'm starting up a Mutant City Blues game this weekend and I was considering making combat a little more lethal. As it is, it's highly unlikely that any PC or NPC will die except in cases were powers are being used in combat. Even a gun is going to do at most 7 damage, and in order for that to kill, a person has to already be on -5 Health.
I'm considering a few options:
1: Have a Survival roll as well as a Consciousness roll. If you drop below 0 Health, you have to immediately roll to see if you stay alive, then roll to see if you stay conscious.
2: Allow the margin by which you hit your target to add to damage, or allow points from a combat pool to be applied to damage.
3: Use the actual damage rules for PCs only, and for NPCs, once they're below 0 Health, they're dead or unconscious as befits the manner in which they were injured.