After 1 (arguably 2) expansions what is square trying to achieve with WAR (and PLD)?

[Aravell]

You forgot the part where WAR gets to do it better than the tank they're stealing from.

So expect this cover to have a 60s CD and work on things cover doesn't while providing a heal.

WAR's Cover:
60s CD
No gauge cost
20% baked in mitigation
Applies a 10% HP shield
Applies lifesteal
Applies a regen