Two things:

First, I have started leveling my 4xDK+Priest team in earnest now. Thanks, mosg2... =P

Second, I see something scary on the horizon (From Ghostcrawler, re: PvE damage):

On fights where there is a lot of area damage, Demonology warlocks, Frost DKs and possibly Survival hunters are all too high.
Howling Blast nerf inc??