"Mistform: This ability and morphs' damage reduction now only works against player attacks, rather than any attack, to prevent it from invalidating many threats in PvE encounters."
---This.
Please reconsider this change. It seems a little...no... very much "alot" knee jerk reaction to the Rockgrove trial. There adjustments that can be made to address the concerns you mentioned without completely disabling this in its current form. I for one, use it in my Vampire/Necro build since I generally have extremely limited time to play and when I can play I solo content (PvE), I am and have never been a PvP type player. This change would destroy my set-up as it's built around solo mitigation of damage whilst a vampire lord.
Again, I think decision is very punishing since it seems to very targeted to a specific type of play...mainly trial content and seemingly making those encounters trivial. I can't relate as i've never done trial content...no time and really no interest, as I love the single player solo experience more.
Thanks for listening.