No, it's not a good idea. Blood Price and Blood Weapon needs to be on different timer.
There is/will be a number of times where I have Blood Weapon ON just before switching tank. So I can pop up Blood Price directly when I'm Main tank. (Happens alot in Susanoo)
What I would want the most on DRK :
- A Self Healing ability, single Target and a bit better than Soul Eater (to be on par with Clemency/Equilibrium, Abyssal Drain single target modifier ?)
- change to Dark Passenger (useless atm)
