I'm pretty sure you've just created 2.0 Warrior with your DRK changes, and 2.0 Warrior was terrible. It was a job built around having little to no mitigation and relied on self-healing. No Rampart, Vengeance didn't have mitigation on it, Inner Beast also didn't mitigate and only healed, Thrill gave you 10% HP instead of 20% and was on a 3 minute cooldown, so you're only active mit was Foresight, which I think was roughly 8-12% mitigation for physical damage depending on your gear. Turns out, in a game built around large, predictable spike damage, taking more damage and then theoretically healing it back up is worse than just taking way less damage in the first place.