My apologies, just one last question in regards to the tanks.

[Kitfox]

An invincible PLD spamming Flash with a healer spamming Holy/Gravity will out damage a DRK/WAR spamming AoE moves with a healer spamming Cure.

I challenge your idea with a DRK in Living Dead spamming AoE damage with no tank stance, with WHM spamming Holy and topping DRK off with a Benediction at the end of Walking Dead. Also, do not underestimate WAR's AoE burst even if the healer had to heal them a little more, it's insane and definitely on par with WHM Holy spam. Both cases also come with a shorter cooldown than Hallowed Ground. PLD is still the worst tank for dungeons.