I had a chance to examine your armory.
I would advise losing some hit rating and picking up more expertise. Like you need at least 26 expertise, the expertise soft cap is a serious priority after 540 defense (which is super easy to achieve today).
I would upgrade your legs asap. Block is a terrible mechanic for warriors at end game. Then I would upgrade your helmet, ideally the honorbound helm for 75 triumph badges. Also each 10 defense rating hybrid gem is worth about 2.5 defense skill. I would recommend getting rid of all of them. Don't gem for socket bonus'. Use expertise purple gems if you need to reach the expertise soft cap, otherwise use straight stam. Socket bonus' are only worthwhile if they award 9+ stam.
Finally with the amount of hit rating you have, your taunt glyph is totally a wasted glyph spot. With your current hit rating I would use a devastate glyph in that location. And I would lose the 4/5 cruelty and put those 4 points into imp TC. (aoe tanking) and incite, 10% crit on those attacks is worth FAR more then 4% across all attacks. Just doing this final paragraphs suggestions should net you ~5% increase in TPS if not more.