Why not delete Conqueror and replace it with fervor of battle?
It felt bad when bruisers didn't get a keystone rune in the runes reforged. But conqueror is not going to be a long term solution for the game either. Because converting 20% (potentially 32% if you go crit) of the damage into true damage makes armor itemisation so worthless that tanks are no longer played (except mundo, who only scales of hp). So something has to change within the next few patches because I don't think players want tanks to be permanently removed from the game
And in my opinion fervor of battle was fine. Sure there were some champion that didn't synergise with fervor that well, but it was acceptable. It created way less problemes than conqueror does, while also allowing quite a few bruisers to have acceptable matchups against tanks.
Edit: I changed the number of % true dmg when stacking conqueror + crit. I remembered the number incorrectly previously.