To me, PLD is fine, it could maybe use a few more moves but thematically it’s a solid sword and board job that uses white magic.

WAR, it’s alright, I’d like to see nascent flash lose the drain and instead become retaliate which delivers a counter attack when struck like vengeance. I feel WAR should be more of the aggressive tank, a few self heals in path, thrill and equilibrium are ok but nascent flash puts it too close back to being a drain tank which I don’t think fits for WAR.

DRK I think should be more focused on drains, I’d totally overhaul it because right now it is dark in name alone. Like calling the move shadow wall doesn’t make it any different from sentinel. But I’d try and keep some of the themes in place. For example the blackest night could become drain, absorb 500 potency of damage from the opponent restoring 25% of the DRKs HP, HP over the maximum is restored as a shield. Shadow wall could become absorb power, decrease the enemies damage dealt by 15% while reducing your damage taken by 15%. I’d just like to see some actual dark themed moves on dark knight, and draining like a vampire fits the bill (having more personal hp drains would also make living dead more viable as a move).

GNB I don’t really know how to make this more thematic because a gunblade just doesn’t feel like a tanking weapon to me. I mean a sword that requires precise timing on trigger pulls to increase cutting power = tank? Maybe it could have been some kind of evasion + parry tank if either of those stats had a place in ffxiv.