Secondary stats such as crit and haste (I leave out hit, expertise and mastery due to them being pretty much standard for all 5 tanking classes) are completely wasted mitigation-wise on Warriors and Warriors alone.
Every other tank gains benefit through more survivability from these stats while warriors remain left in the background.
If this was intentional or overlooked is still in question to me however seeing as we are balls deep into MoP I can only imagine that the model for warriors was intended.
Therein lies the problem. To me, this plateaus warriors in comparison to other tanks. The feeling of linear scaling went out the window when other tank roles took off running with the slew of itemization Throne of Thunder presented.
This wasn't as much of a deal to me in T14 (albeit I knew it was coming) due to the fact that itemization didn't allow hit and expertise caps to come so naturally and thus make going into secondary stats the thing to do.
Here are some examples (Once again I leave out mastery, hit and expertise due to their benefit being basically mutual across all 5 classes):
Monk: Haste benefits Energy Regeneration (and directly thus benefiting Chi generation) and also benefits Elusive Brew stacks due to more AA crits. Crit directly benefits Elusive Brew stacks.
DK: Haste benefits Rune Regeneration which is a boost to survivability due to more DS/Runic Power/etc. Crit has no benefit
Paladin: Haste benefits GCD reduction which is a boost to Holy Power generation which increases survivability. Crit has no benefit
Druid: Haste benefits AA rage generation which leads to more survivability due to more Savage Defense/Tooth and Claw/Frenzied Regen spammability. Crit benefits Rage generation.
Warrior: Due to have no rage from AA, haste has no benefit nor does crit.
"But Mass, you have Shield Block AND Barrier, qq moar nub l0lz"
Sure, I do, however my rage is not something I can generate faster than what is dictated by my GCD. Warriors have no way of increasing their resource generation, something every other tank class possesses.
I am by no means saying that each of the above classes goes out of their way to stack haste/crit to become super OP. I am saying that the stats have benefit which allows them to scale more-so as gear contains more and more stats.
The closest example to a warrior is a DK in terms of how little they gain from secondary stats, but they still gain benefits for when Heroism is popped or are in a fight where haste is increased (Primordius for example).
"What do you think will fix the problem Mass?"
I believe our rage model needs to be changed, or that our mitigation model needs to be shifted.
Rage Model idea:
It is plain and simple to me, and it boggles me why the community hasn't commented much on it before.
The Druid rage generation system allows both haste and crit to be useful whilst not allowing them to be rage capped in normal raid situations.
If Warriors got rage from AA we can dull down the rage we get from abilities (Knocking Shield Slam down from giving 20 rage down to 10, Revenge from 15 giving 5) and allow a steady stream of rage to be accrued through AA.
Much like druids the more haste you have the more rage you get and getting extra rage on crits would allow crit to not be a wasted stat as well.
Mitigation Model idea:
I believe our Shield Barrier should be changed to have some sort of damage requirement to provide mitigation. With crit and haste being out of the equation Warrior damage has fallen behind all other tanks.
Giving Shield Barrier a damage requirement instead of a boring "scales with AP" modifier it will allow Warriors to extend their itemization into secondary stats along with their tanking counterparts.
Here is my idea:
Shield Barrier (Old): Raise your shield, absorbing ((max((Attack power * $STR) * 180 / 100, $STA * 250 / 100) * 1) / 3) damage for the next 6 sec.
Consumes up to 60 Rage to increase the amount absorbed. Absorption amount increases with attack power.
Shield Barrier (New): Raise your shield, absorbing 20%-60% of the warrior's damage dealt in the past 3 seconds.
Consumes up to 60 Rage to increase the amount absorbed (Obviously 1 rage per % gained).
With this model warriors can do an "All Crit" build and rely on them doing damage to absorb damage. (Kind of how the monk statue works, how Monks go all crit to have EB stacks and Druids go all crit to have Rage)
These are just ideas and I am looking for people who share my idea of the lack of scaling that warriors are presented with due to other tanks being able to use stats that we cannot.
Looking forward to seeing if people share my views, thanks.