Blizz, you keep trying to make pet build a thing with all the item changes. But, in 2.3 PTR people were experimenting with helltooth fire gargantuans, which seemed to be pretty good for a while. Then you guys took out the pets double dipping thing. Personally, I think a pet build is never going to work since you took this out; you guys should totally bring it back.
I was trying Fire hellhound build today with helltooth set of course, using convention of elements + tall man's finger + ring of royal (last one in the cube) wasn't using a furnace in my cube atm, the dog was hitting FOR FUCKING BILLIONS and fire pulse aoe as well, 4 to 6 shooting elites and bosses in greater level 60 (my gear wasn't all ancient) the exact numbers are pretty difficult to see really sometimes just the fire pulse killed the thrash mobs even without critting
I wasn't using hellfire amulet with one extra passive for the dog as well so definetely it has very high capabilities, I will try the gargantuan fire build tonight, maybe it won't be for faaaar pushing into the 75+ but it's stupidly fun lol