Except DRKs will have 20k HP now. That complicates matters. I'm seriously hoping that the overall evaluation of other tanks that they mentioned is going to address this (not to mention, it's buggy as hell right now anyway).
I was in the Vault the other night with my FC healer, getting her the dungeons she needed for her Relic. But DPS was low (two at-level BRDs), and she was having a horrible time with lag, and kept lagging to death on the last boss (usually on the last phase where the two lines of knights march down the platform). Despite multiple strats and attempts, the lag kept killing her when that second line of knights came out (to the point where the entire screen would lock, and six seconds later she'd rubber band to her death). Our final attempt won the match, though, because after she died, I was able to time Hallowed Ground just so to preserve my life with <200 HP left, and keep tanking the boss long enough for the DPS to get another LB1 out. The fight ended right as I was about to take a hit that would have meant death.
While I used Hallowed Ground on that attempt, Living Dead would have been just as effective.