Tank adjustments we can agree on?

[Teiren]

but the player base has minmaxed to the point where they're using a clunky kit in an optimal way that -probably- wasnt how the devs intended the class to be played.

This is exactly correct, and this is exactly what's upsetting me. This game started out being as casual as possible, which is why Oaths/Grit work like they do, and I think they need to keep it that way because people will just go back to WoW if they try to do overly difficult/annoying gameplay. However, at the same time even people that don't play MMORPGs to death will eventually learn and grow frustrated with this Oath/Grit system (many probably already have), so they definitely should change it.

Most tanks now, on hard content, use their tank stances in the same way they might use a short duration cooldown: incoming damage, pop tank stance + rampart/skin or something, absorb big hit, back to DPS stance. This feels fine for Warrior due to the fluidity of the kit, but just feels "off" for the other two tanks.

I'm not primarily a tank, and I haven't done Savage yet, so these are all honest questions that I'm not trying to be accusatory or inflammatory with:
How is this possible?
Why would a tank stress out his healer(s) like this?
Putting aside player psychology (which is still important), isn't healer DPS higher than tank DPS?
Therefore, aren't you contributing more DPS by reducing damage taken by as much as possible in order to let the healer DPS more and heal less?

I've played WoW for many years, and if a tank ever tried something like this they would die before the healer could heal them. Is Savage's damage output on the tank really not deadly enough? It already seemed almost lethal on Normal before everyone outgeared it to hell and back. Burden of the Father's burst was somewhat a nightmare. I assumed it would scale up properly in Savage.