So to follow up on the previous post what buffs does WAR need?
1) Nascent flash buff. Give it 75% of total healing you do to yourself shared with your target instead of 50% and increase the time on it so you can fit one more GCD in it.
2) Remove the potency on vengeance and slightly buff other skills so you are basically 'moving' that potency so it doesn't feel bad when WAR isn't MTing.
3) WAR needs improvements to the flow of the job. The job feels like crap to play when IR is on cooldown while all other tank jobs outside of their "burst phases" still having things to manage and do. WAR does not besides trying to hold on fell cleaves for raid buffs or IC for raid buffs. WAR doesn't scale well with DRG and BRD buffs because of the DH/CRIT guarenteed so if you are running them WAR falls behind all other tanks.

(Personal request)
Rework the DH/CRIT identity of the job. I don't like it and it makes melding WAR akward when all other tanks meld in one way (Skill speed requirements is the exception) but WAR has to be melded differently. DH? You don't do that on WAR and right now DH is the best to meld in all other tanks until the end of this tier with BiS because there is so much crit on them. It makes swapping between tank jobs expensive for an unnessesary reason.