Is there any way to disable combat assistance from other players? Or restrict it to friends/group members only?

The current system, to me, is horrible, allowing players to “snatch” enemies away from other players while in combat. It is far too annoying when you are trying to fight an enemy and it gets dragged away and/or killed by other players constantly.

Don't get me wrong, I like playing with my friends, but having random people come up to "steal a kill" or drag enemies away from you the 'chain pull' move while you are trying to fight is just a nuisance, not help.

Happens in MMO's. Find areas of the map that are not jammed with people. However, you should still get a share of the loot.

How is it steal when you still get credit and loot for killing the enemy ?