After the most recent and repeated nerfs to unholy dk defensives & survivability, I would think that some changes/tuning would take place, in order to counteract these nerfs.
For instance the nerfs to Veteran of third war (20% stamina buff talent), is just 6% in pvp combat? Dk’s already are one of the most squishy targets in arenas, at the very least un-nerf this to let dk’s have some more health/stamina to deal with this heavy damage and burst meta.
I can understand the other nerfs to AMS or some passive healing, but a better solution could be achieved, by reducing lets say the nerfs to the passive spell damage reduction/dot duration or replace lets say the 3% leech talent with 3% armor. Just some minor changes could make the difference.