Bring Cleric stance back

[Atreides]

I wasn't around when this was implemented , what did cleric stance do?

Cleric Stance from back then was a stance you could toggle on and off like tank stance. What it did was swap your MND with INT. Back then Healers damaging spells scaled with INT while their equip gave them MND.
So by using Cleric stance they sacrificed Healing for Damage. It was removed because alot of healers were scared to use if something goes south you had to turn the stance off which costed you a GCD and then heal, because healing in Cleric stance was extremely low.