1) FIX LIVING DEAD. This is BEYOND a "should have been fixed" issue. if you want it to kill us because a healer was asleep at the wheel, just change it to automatically afflict the DRK with weakness and not cost the DRK downtime from death, and the healer/SMN/RDM mana from the rez.
2) Dark Mind nerf. Revert this.
3) Salted Earth/Abyssal Drain. Up the potencies.
4) Blood Weapon. Extend the duration to 15s.

The rest is just stuff I would like to see but feel would be too much.
5) Living Shadow. Make it's entire time of actively doing damage to the boss be a full twenty (20) seconds. Alternatively, give it a way to leave the arena in an impactful manner akin to Automata Queen / Bahamut/Phoenix-egi.
6) TBN. 7s is not enough time for a 25% shield to burst unless it's a tank buster, or a mass pull. Countless times I've used it and it not break from boss auto attacks alone. It is worthless and not worth using for fluff mitigation due to the cost associated from it failing to break. Frankly, TBN is a design and balance nightmare in this regard I feel as there's no one way that'd please everyone to make this skill better.