What if Tank classes could only meatshield?

[Kenji1134]

But that really does not address the core issue which is that Tanks require 2 primary stats to function in the current endgame meta.

The problem isnt "I have to stance dance with no major drawbacks to help my party meet the dps check."
It is "I have to essentially get a set of both STR and VIT accessories, and juggle having just barely enough hp to skid through the tank busters, while increasing my dps enough to contribute to the group."

Sure you can tie all enmity bonuses to the tanking stance, it will only free up more combos to be used in a dps/non-tanking stance. Hell, go for it!
A more comprehensive solution would be to in some way balance tanks such that they work off of ONE primary stat like everyone else, which is VIT.

To do that VIT has to somehow provide a tank with greater damage output.
Be it making STR and VIT contribute 50% of their value to Attack Power, instead of STR being 100%.
Or completely gut STR off of tank gear and make VIT provide HP and 100% of Attack Power on tanks, this will require adjusting the Melee Raw Potency formula for tanks a bit.
Or perhaps a more complex way but without really changing the current system, would to add some Tank Stance Only damaging ability to significantly reduce the DPS difference between STR tanks and VIT tanks.

If you really want it to be somehow tied to the tanking stance, then do the following:

<Tank Stance Name>
<Current Tank Stance Effects>
Increases Attack Power by 150% of Vitality, and lowers total Attack Power by 50%.

So my STR WAR w/ 916 STR and 794 VIT would have (916+794*1.5)/2 = 1054 Attack Power.
And my VIT WAR w/ 720 STR and 999 VIT would have (720+999*1.5)/2 = 1109 Attack Power, 5.2% more attack power while tanking when using VIT Acc's!!!

And now VIT is useful again!