The update to Last Resort was a direct nerf, that's way too much defense lost in a job that already tends to take a lot of damage. Warrior's berserk got boosted without a corresponding loss to it's defense, why didn't SE do that with Dark Knight.

Consume Mana is horrible, it's 1:1 and provides virtually no real usage. It needs to be 50% of max MP and more like a 1:2 or 1:3 converted MP to damage ratio, would be much more useful.