What is the worst Aghs and how would you buff it?

I don't think I've seen anyone consider buying Aghs on Underlord, ever. It's a long cooldown two-way teleport… but it requires a channel AND isn't even global. I'm not quite sure about this, but I think it has increased target priority when right clicking too which can grief you when fighting near it.

Personally I would buff Fiend's Gate by making it actually global range. When cast, Fiend's Gate applies all of Underlord's auras around both Gates. Casting Firestorm and Pit of Malice also causes those spells to be cast around the Gates at a reduced radius (maybe 75% or smth idk). Keep the cooldown and duration as is (110s and 20s), so Underlord gets to duplicate Firestorm 2 (3 with talent) times and Pit 2 times without CDR. Maybe make the Gates have a 1s formation time too so enemies can see it (since it's global).

This would Underlord more area denial in big fights and allow him to contribute globally without having to wait for a teleport.

What do you guys think? Would this still be bad? OP? What other Aghs need love?