How about we STOP asking removals and folding whole concepts into a single button? Especially for bullsh** reasoning like "it is annoying having to press it at the start of the dungeon"?

Multi tank setups exist, they are called raids. Enmity management exists, but depends on the content you do. Dropping stance is a useful tool if you want to fine tune enmity without having to dump Shirk if you want to use it for a later mech but otherwise risk overaggroing.

It also sets apart the pulling tank from the other, good luck finding this out without a buff and no verbal communication.

Like you offer the actual solution already - make something with the stance. But stop asking for removal, this is utterly unproductive.