Hey look! Another Dark Knight fan re-work thread!

[Daeriion_Aeradiir]

Lv. 50 - Dark Mind - Changed: Removes HP cost from all skills
Lv. 70 - The Blackest Night - Changed: Reduces HP by 20% to add a 10% shield to target party member.

Your DM and TBN changes would neuter DRK's mitigation severely, when they're already weaker than the other two tanks on the mitigation front, and basically obsolete it from savage+ content entirely. You never want to nerf a tank's CD kit, or you'll find that tank quickly out of a job.

15% may only be 15% magic vuln, but it's still mitigation. A better idea is to make it 15% Omni damage to better compete with the other two tanks.

As far as TBN, you're taking away the best effect (20% on DRK) and replacing it with a massive penalty (-20% health on DRk to even use it). Why?

And it's my own personal opinion, but as intriguing as HP mechanics are, doing them on a tank is a disaster waiting to happen. I've seen BLM's kill themselves with convert way more times than I'm comfortable seeing.