I dont think they nerfed MRD, actually they made it better than it was in patch 1.18. They reduced the potency of brutal swing, skull sunder, brandish, and trunk splitter, but buffed storms path. I can spam storms path with a 10 sec cooldown and do 700 - 900 damage to R45 - R50 enemies in a radius and generate good enmity also. MRD is also a pretty damn good tank now, I have 3300+ HP in a full pt and can hold hate and stay alive with several R45 mobs on me.