Dark knight abilities. Uncreative.
No, I don't think Dark Knight needs any major buffs really. I do think it's sort of a victim of poor design. So much wasted potential. Look at a good chunk of the abilities.
Salted Earth - Nothing, just damage. Use when up.
Dark Passenger - Aside from large trash pulls, just damage. Use when up.
Plunge - Pointless gap closer, but most of the time just damage. Use when up.
Carve and Spit - Minimal MP recover, or... Damage. Use when up.
Shadow wall/Shadowskin- Straight up damage taken down, no gimmicks or other uses.
Unleash/abyssal Drain - These 2 skills more or less serve the same purpose, except unleash costs less and abyss drain can be dark arts'ed. Why not just give the drain effect to unleash?
Living dead - They tried. But it sucks.
Seems like they wasted so much potential when creating this job. IMO it should have been more life steal based or had more gimmicks involving dark arts. It's like the 3.0 version of 2.0 PLD. You sit there and spam your soul eater/delirium combo and use oGCDs when ready. I don't see how they can make a kit like warrior's, that flows so good together, and is so much fun to use, then turn around and make a spam-fest tank job like this. Sure, it gets the job done... But it lacks any real identity(no, dark mind doesn't count).