Lets shut these new tanks up please: 7 PLD 1 SCH Thordan clear and then 7 DrK 1 WHM

[Reynhart]

Inner beast surely doesn't count, because entering Defiance already is the tradeoff in the DPS department.

I'd give them back Inner Beast from 2.0 while keeping the rest as it is now.
What should be confusing you is a tank job designed to "DPS". Reducing the mitigation is to keep with that view while offering a tradeoff

Well that's exactly the reason why DRK is not able to do so, because it would be wayyyy too overpowered with Living Dead.

Why ?
It's the exact effect of Holmgang. Yes, Living Dead lasts a few seconds more, but the recast is also longer. And It's the only skill where you can end up dead even without taking any additionnal damage. That's a huge tradeoff.