The server I play on has a few chumps that always wait till everyone is offline and then go raid every house they can find. We keep smashing them, but they persist. Anyway, it would be very cool if there were some kind of bounty board - perhaps even if a ‘safe zone’ area so people could gather there or approach without worry. Then if you kill a player, you get their head or something (certainly need to have some mechanics in place to prevent guildmates or if there’s some sort of alliance flag between guilds or whatnot to prevent ppl exploiting this.
The person putting up the bounty should have to include the reward items on the bounty, so then when a player comes with the bounty head, they can claim the bounty.