Build Guide
With the change to Swamp Land Waders pants (Sacrifice deals 350-400% additional damage to targets affected by Locust Swarm or Grasp of the Dead) and Grasp of the Dead: Death is Life (Chance to summon a Zombie Dog increased to 70%) in 2.4.1, build based on Sacrifice as primary damage skill is viable now!
From my experience, as long as mobs are dying in GotD regularly, GotD and Homunculus are adequate to ensure permanent supply of dogs most of the time. Therefore, other sources of dogs such as Circle of Life and BBV: Boogie Man are probably not needed.
Game Play: Summon your Fetish Army and Zombie Dogs. Cast GotD on group of mobs. Then start spamming Sacrifice on the mobs. As long as you has reasonable killing speed and mobs always die on GotD, you should be able to keep spamming Sacrifice most of the time. The only exception is during Rift Guardian fights with no adds. In such case, Sacrifice all your dogs => cast summon Zombie Dog, then Sacrifice every 2 seconds to allow maximum of active dogs doing the damage, until you can use summon Zombie Dog again. BBV uptime may not be as high as Carnevil or pure melee pet builds, so use it only on elites / RG / bigger groups.
Drop Hellfire and Convention for Endless Walk set.
Good suggestion! I will add this option. Thanks!