Yo what's hilarious is that DRK used to kick ass at self sustaining in dungeon pulls using the old GCD version of Dark Arts Abyssal Drain. It was never on the level of WAR with Bloodbath for single target, but it was perfectly fine in AoE with Blood Price generating MP to burn on Abyssal Drains.

I would like to see them return to making Dark Arts more versatile again, that was a fun part of DRK. Like drop TBN to level 35 for starters, but when it pops maybe let DRK choose to spend the free Edge or Flood on an Abyssal Drain outside of its cooldown instead, or letting Quietus steal generate big hp like in PvP (and the old Steel Cyclone). That kind of thing.

I guess this wouldn't help healers being pointless in dungeons or all the tanks being overtuned, but it might give some flavor back to DRK's mitigation now that they took everything for role actions in StB but gave it TBN, but then gave every tank TBN but better in ShB/EW. It could be a tank with mitigation combo chains.

Dungeons definitely haven't kept up with tanks, though, even at min ilvl, and especially WAR, so I hope something changes.