Dark Knight : Just another mitigation tank

[Chihaya]

There's ways. Call me optimistic, but I don't really believe there's no way to tweak it so that it's fair that Dark Knight can Self Heal at a reasonable amount. After all, they have a number of things keeping them from using it regularly.

As long SE keep the way they are doing with tank busters in progression, all tanks needs mitigations.
PLD popping CDs, WAR popping IB and Vengence.

Blood heal sounds good for consistent high damage
However if they tweak raids into this, it would have little use for other tanks as their mitigation are short duration with long CD. Might as well just use a tank that can heal themselves all the time. Also, putting a short duration with long CD on self-heals defeats the whole "blood tank" concept if they have to still rely heavily on healers to heal them most of the time