I agree they deserve an account-level penalty but hear me out on a bounty system.
If you damage me, I should be able to put up a bounty but up to a certain limit so it’s not abused. If you kill me, I should be able to put a bounty on your head up to the limits of what my inventory/credits are worth.
Take these two assholes, for example. I would bet my several millions towards the first person to kill these assholes. They’d be marked in-game for others to see and take out. They’d have to be looted in-game to “claim” the bounty. Maybe have the bounty item sit permanently in their inventory and make it weigh 20 pounds until they’re killed.
This type of thing opens a new avenue for gameplay. I’d become a bounty hunter. Now Embark could sell me outfits to match my bounty hunter status and even grant me class-specific perks to earn as a bounty hunter.
Recap: If you kill me, I put up a bounty limited by my inventory’s worth. You get a permanent heavy item to lug around until someone kills you and takes it off you. They turn it in for the bounty reward.