Quote Originally Posted by FallenWings View Post
You get problems where a PLD is now probably stuck in a dungeon with a healer with his/her thumb up their {rear} watching netflix or something and all the PLD can do is make damage non existent and hope atleast the other two DPS are confident because his contributions are being squandered by the 'healer'.
In dungeons I don't think it would be that bad. Especially since I imagined PLD could trade its damage for mitigation progressively. So, you could stick to the "usual" mitigation in 4-man group, and stack up the real turtle shield in 8-man.

To sum up, I posted an idea where PLD would have a skill working a little like Enochian. He would spend half its MP pool to put a buff on Shield Oath (-10% damage taken, -10% damage dealt, +1 enmity multiplier), for a set duration. And each time you cast it again, you'll gain another stack and you refresh the duration with a 5 seconds penalty. So your highest mitigation would depend on how you manage your MP until you have no choice but to let it wear off.
Quote Originally Posted by FallenWings View Post
Devalueing tanks and making them feel less needed then they should.
This is not an issue. If you have two tanks beside PLD, bring them. It would just be another setup. Tank damage would just need to be balance so that 2 tanks + 2 healers + 4 DPS deals roughly the same as 1 PLD + 2 healers + 5 DPS. Or 1 PLD + 1 DPS = 2 tanks