So, they've been working on monster AI recently and I thought this could be funny. Here's the thing: Mobs target priority differs between players either depending on the held item or armor.Like the player with less armor pieces(I mean less armor slots used), or the player with raw meat in hand. Think of monster hunter, there could be an item to attract mobs. Pherormones, bait meat etc. Just a thing to add strategy to the fight, probably would be more effective with bosses tough.
That's actually good idea, but I believe it'd be somewhat hard to implement, but it would be nice. Also it shouldn't be "hard set aggro", as in if you wear certain equipment the mob "will go through stone and volcanoes" to kill you. That'd result in extremely easy enemies, since one player wears just the stuff that annoys the boss and runs away, while other players just rape it to the ground.
lol yeah I don't know how the AI works but in one of the updates kyren said the mobs "Get tired" of chasing the player.