I mean there is one simple solution that would make this thread completely unecessary: Group up. You killers should just go in with a group in the first place so you can outgrind any "karmabomber/griefer" in a breeze so mobs only spawn when you are back in place. And you bombers should just ask for a group before running into a spot and start killing ****. And groups going into a spot should be able to ask the lone ranger into their group. And everyone who disagrees because group play is not efficient enough or just wants to be asshats: well... eat ****. All this "we play against each other not with each other" nonsense. Why even playing an Mmo in the first place? If you wanna hardcore grind alone, go play PoE there is simply no one in your area unless you invite them to.