I don't understand how killing mobs on afk players is KSing. They are taking no offensive action to the monsters. Reflected attacks with no player input doesn't qualify as engagement IMO. If anything THEY should be banned for Mob Training. AKA holding mobs without taking offensive action and holding up the spawns for other players. Not to mention when an afk player dies often times they leave behind massive mobs that other players may not be equipped to handle. Ruining their experience again, in a different way.
Is KSing really even bannable? I've literally never been hit by it, despite many people qqing in PMs saying they'd report. I don't think the GMs actually fault players for actually playing the game and leveling efficiently. Especially in TI maps where everyone is apparently tilted as hell. People cry wolf so much I would think KS reports would just politely go into the paper shredder. The only place KSing is mentioned as an offense is here on the forums, its not in the support page FAQ, or any of the Terms of Service. I assume the forum rule (if you can call it a rule) is to discourage people from encouraging kill stealing. Which as discussed, I don't think AFK players qualify for this "protection".
If you stop skills from casting on physical melee damage and change it to physical melee attacks you enable the cool autocast builds and disable the obnoxious ones. A-la Hindsight. (Never going to happen though. Damage is already done.)
KS only exists if the person bothers to do a report :T
And mob train is holding monsters with the intention of harming other players, be it by holding spawn or pulling onto ppl to kill them. If the monsters die, it isn't :T