Dark light is actually pretty powerful for farming T16 (keys) and GR90 (gem ups and primals).
Heaven’s fury build is for pushing, but it’s too slow for farming.
It’s great that AoV has 2 different builds with the same set that can cover all options (farming vs pushing), so that can use it to do everything.
The optimal setup is to cube the Darklight and equip the Steed Charge set for +100% damage and very quick clears.