I'm not saying DRK needs a buff, I'm saying it would help. Keen flurry, and otherwise never used CD, would synergize well with DRK abilities. Invigorate would help with the TP issues DRK has. Blood for blood would increase dmg while keeping with the lore of the DRK but this still wouldn't put it above the WAR IMO as a 60 DRK and WAR. My point wasn't that DRK was in a bad place right now, it was that this would be something that could give it a more distinctly different identity while keeping with the lore of the job and synergizing with current abilities.
Much of this probably comes from my tanking partner, who is a Paladin. When he is MTing on PLD, I feel that if I come as DRK when I have WAR already leveled and geared it is a mistake. WAR brings great dps and utility to the OT role. Giving DRK b4b and invig to use as an OT especially would not place them above WAR because of WAR's utility and triple fell cleave burst dps, it would simply help to mitigate some of the issues DRK face.