DRK tanking. A little bit of pain.

[Drkdays]

You've listed assets that all tanks have with the exception "becoming a zombie" which isn't really accurate. "Mana draining" I don't get. You mean skills that cost mana? PLD have that as well, even warriors do with cross class. Or do you mean skills that drain mana from others? DRK have mana regeneration skills but not mana draining skills. As for dark themes, I'd rather have dark abilities. You can paint a horse black and name it shadow, but it's still a horse. Meaning I'd like to see abilities that are more than just themed.
As for aether life force, I get where you're coming from but what separates Drk from any other class in that case? Also, you don't die if you run out of mana.