And this, in actuality, is why Prot DPS (“Gladiator Stance”) is unlikely to return.
So long as its means of throughput double-dip into absurdly high eHP (especially, against physical attacks), it’s an inherently broken spec, especially in PvE. Either the utility of its bloated eHP holds back its offensive throughput, or it’s just the objectively most advantaged DPS spec in single-target.
Now, if you had it scale like any other DPS, and its utility was simply just barely valuable enough to warrant its having less flexible or dynamic throughput, especially outside of single-target, it could be a workable spec.
But I have little doubt that it will somehow force even worse optics for the devs to give Gladiator Stance back as an actually workable and balanced build given the nostalgia-wagon’s insistence that it must somehow be able to simultaneously both top raid charts or one-shot people in PvP and have the highest passive and active eHP of any DPS in the game.