With 2.4.2 buffing Ring of Emptiness to 300% increased damage when enemy is affected by both Haunt and Locust Swarm, this item alone will allow new builds to flourish, new variations to be done, etc.
Now, for me, I've always played WD with the idea of DoT's and zombie pets. I'm just wondering if the RoEmptiness will boost pet damage as well? If so, a Jade build with MoJ/Uhkapian Serpent/Enforcer seems really cool. The toss-up is Quetzalcoatl vs Tasker and Theo's.