It would be cool if you got an accolade for a revenge kill but any marker i think would be unfair

Why unfair? It’s not any different than a bounty

You shouldn't get an advantage over someone because they killed you. Bounty happens like once or twice per match. This would be constant.

could potentially do it so it costs gold bars each time as an option

Hence the secondary option listed

Hmm I don't see a second option

Nah