I really feel like Oblation was meant to be something added onto The Blackest Night, until someone decided not to do that and give us current-from Oblation instead. TBN also still costs MP (meaning we can waste it, and not get our Dark Arts proc), gets ripped to shreds in 2-3 seconds meanwhile other tanks get to enjoy 8 seconds of comfort from their main mitigation, as well as having bonus defensives slapped onto it.

Dark Mind still only works for magic damage, Blood Weapon wasn't changed to a charge system while Delirium was, we still don't have Stalwart Soul until level 72, and Living Dead can be both ended early by a healer doing their job and can kill the dark knight in Walking Dead status (also I think it's bugged to where a DoT can kill LD effect rn). Also Carve & Spit can't heal us despite sharing a recast timer with Abyssal Drain and both restoring MP.

Besides buffing TBN, tying it with Oblation at the very least and reworking Living Dead, I'd go ahead and swap the level requirements of Stalwart Soul and Abyssal Drain (or Carve & Spit) so DRK has at least their 2nd AoE combo pre-70.

Forgot: can someone delete Enhanced Unmend and replace it with something good?