Malacath is the probem. These proc sets allow the 40k hp builds (even 30k ones) to be super defensive in every aspect meanwhile the procs do just enough dmg to actually kill people who "try" to play differently - i.e light/medium armor glass cannon builds that trades defence for offence (while ending up having less offence and less defence then the formentioned builds).
It is as broken as it can be and the only sensible reason is that they need to make money of off GREYMOOR.
Every patch critical dmg is nerfed to herd all the cats towards buying the DLC and playing with Malacath. I am surprised they have not put a DLC checker upon login that randsomes you to buy Greymoor or have your account deleted.
Once "market" is saturated and the sales objective is achieved the nerfs will roll in just in time to sell the next DLC.
The DLCs is the devs after sales, everyone knows that after sales is the biggest cash cow in manufacturing (cars, shipping, oilrigs, train sets etc).