Originally Posted by
YusiKha
Adding a 4th tank wasn't the thing that balanced them, it was the trivialisation of Aggro.
WAR and DRK could generate large burst aggro at the start of a fight without losing much damage (WAR's fantastic Defiance+Unchained+Equilibrium, DRK's less-good DAPowerSlash+NoActionGritRemoval) while PLD had no way to compete and its DPS stance took an action to apply.
This separated the tanks into 2 categories: Pull Tanks (WAR/DRK) and Off Tanks (PLD/DRK).
The problem is that DRK was outclassed by its rivals in both categories, as WAR provided better damage output and PLD had much better group mitigation.
Then ShB's tank stances came and basically removed Aggro as a mechanic, so now each tank stands on its own merits, rather than being pidgeonholed into one of two categories, and so balance can be achieved easier.
Jobs being pidgeonholed into 2 distinct categories, and balance being hard to achieve because of it... Hmm... I wonder why that sounds so familiar...
The one that can flit between 2 categories being the most clunky to play, and the least played... Gosh, this sounds so familiar!