I get the idea and I would love to get some flavour back in the form of stances. But the unfortunate reality is that DRK and WAR only ever used their tank stance for like 9 seconds after pulling, PLD never wanted to be in tank stance at all and as long as one stance is more of a gain than the other then there is effectively only one stance.
You could probably make stance dancing a thing if bosses had mechanics that absolutely required your tank stance to survive but you would have to make tank stances provide roughly the same baseline mitigation and of course SE would need to change encounter design.
They have a visual distinction but barely any mechanical. Shields are useless in most cases since they're so weak you need to heal anyway, the fairy is a braindead oGCD, the star theme of AST is just a different coat of paint for "aoe heal here" and SCH as well as WHM have resource management in the form of aetherflow or lillies, AST being the only somewhat unique one with it's cards...and it's MP issues lol. All healers spend their downtime, which is a lot this expansion, pressing a dot every 30 seconds and spamming one button for the rest of it.
Making their abilities have a different sparkle doesn't make for very engaging gameplay.
