A trait for tanks

[MaraD_]

Actually, now that you put it that way, that's the one way that sacrificing HP could work as a tank mechanic. Sacrifice X health, gain a temporary shield with equivalent damage absorption for Y seconds. If the devs were capable of designing more nuanced tanks, that would make a lot of sense for DRK.

Ppl have been mentioning that for years lol.
Also, you forgot they already have a tank with HP sacrificing. (As usual with their miss matched themes, its not on DRK)

T'would be a more interesting Blood Mechanic.

My take was something along the lines of Blood being used in place of HP/MP mechanics. For example, taking up blood in place of MP for TBN.
(Blood being primarily a mitigation mechanic, rather than a DPS one)
If you dont have enough blood, you sacrifice HP for TBN instead.
You can "Absorb" Blood with auto attacks during Blood Weapon. If you reach max blood, the auto attacks absorb HP directly as another possible design.
Another possible design is the old Dark Side. Instead of MP draining per tick, it can be Blood. (Or maybe each time you're hit, with Blood Price canceling your blood loss.)

I dont remember all the variations Ive typed up over the years, but none the less, they should at the VERY LEAST given superbolide to DRK.