Please fix healers problem without touching other roles

[Ianmaru]

And if you want to leave war as the berserking healing tank, it's mitigation needs to be nerfed, like it was back in 2.0 before the first rework.

It can't have both.

first, do you play and have complete understanding of tanks? if yes then you would know that tanks have 2 subroles: 'sustain tank' & 'offensive tank'. WAR & PLD are sustain, while DRK & GNB are offensive.
now to answer to the part I quoted: WAR doesn't have both. between PLD & WAR, WAR mitigation is lower (even lower than GNB too). both of them have heals, but WAR is stronger on the heal part, while PLD is stronger on the mitigation part. GNB & DRK on the otherhand, they're not sustain tank, hence they get more DPS oGCDs & output in place of the heals that they don't have.