While I think that the buffs that DRK got are a move in generally the right direction, I personally would have preferred to get some of the stuff it provided in a different way but that is more of "game-play" types of complaints that I will go into in a moment.

As for general balance aspects of the buffs that I feel were missed or didn't quite hit the mark ...
- The cure potency on Carve and Spit should be higher and really closer to around 1000 to 1200 potency. That makes it closer to other tanks 60s or so heals in potency and then makes Carve and Spit an overall advantage to use in terms of damage and healing when dealing with 1 to 2 enemies and Abyssal Drain advantageous when dealing with 3 or more targets.
- I still feel that Oblation needs to be buffed to make it more equitable to the additional parts that the other tanks get with the enhanced versions of their short recast defensives. Oblation should have a much shorter recast, I would suggest 30s, to make it closer to the frequency in which the other tanks can use their short recast defensives and get the benefit of the additional effects provided by the enhanced versions. Additionally, some additional aspect should be added to Oblation like a small heal or regen to, again, make it match more closely with the enhanced versions of the short recast defensives the other tanks get. Basically the combination of TBN and Oblation should be relatively equitable to the enhanced versions of the other tanks' short recast defensives.

In terms of game-play, I still think DRK needs more to do around the 30s intervals. Currently, with the simplicity of DRK's base GCD rotation, not much occurs to deviate from cycling that GCD rotation until you hit Delirium every 60s. That leaves long consistent periods of almost the whole minute every minute where not much is going on within their rotation. Personally, I want to see the rate at which Blood is gained increased so that how often you are using Blood Spiller is increased noticeably. Maybe changing Blood Weapon to a 30s recast would help with that and improve the lower rate of MP gain that probably needs to get fixed?

So my overall feelings on the changes/buffs are that they are good but not really enough in the right places.