I'm not a DRK main, but things I hope they do:

Enhanced Unmend: Applies Darkside.

Flood/Edge: HP gain (100 per for Flood, 300 for Edge)

Abyssal: Since it now shares a cooldown timer with C&S, change it to an MP gain.

Dark Mind: Passable. Added effect: Each time person with buff is struck, regain HP. (300 cure pot)

Blood Price: Same as Dark Mind, but physical. Shares cooldown timer with it.

Salt&Darkness: If it's not targetable, just make it a flat potency hit.

Scourge: Returns as a Darkside action.

Living Dead: No more Walking Dead. Skill prevents you from dropping below 1HP. Compiles damage taken and heals for half of the damage taken at the end of the duration.