26k health is kind of low I think. Also the exp soft cap is 26, so you could drop that a bit to get some extra stam. You might be fine with 26k but I like a bit more time to hit my ohh crap button. I don't think I would use hit/exp gems, I might do hit/stam and exp/stam gems.
I am certainly not skilled/knowledgeble to be a mt yet so don't take my word for it.
I think it's not bad... but your current stuff is obviously slanted towards threat. I dont know your DPS and how your doing in relation to them.
I know when I was tanking (Fury right now) i was about 28.5K unbuffed and 25/20/18 for my avoidance stats. I think you could certainly swap in a couple of pieces with some dodge on them and move some gems around to get a bit of balance.
It's just my personal opinion, but for being a MT i would ignore Shield Block Rating all together, pretty much Shield Block Value aswell and focus on being at the softcaps for threat stats, having a decent HP Pool (28K+ unbuffed) and as much dodge as you can get without sacrificing too many other things.
Block is practically uselss on most fights unless you stack ungodly amounts of it and then your other stats suffer a lot. Dodge is great, every attack you dodge = win. HP is awesome and Armor too for absorbing the ones you dont avoid.
modest amounts of block and SBV are nice, i certainyl don't advocate letting them go altogether, just wouldnt worry about upping them, what ever comes on gear naturally and ignore those stats when evaluating gear.
Personally it makes me suspicious any time I see a Tank sitting exactly at 540. Makes me wonder if he or she appreciates the benefits of Defense beyond that point, or has just been shuffling gear around because they think there's no reason to ever go above 540.
I know why you think that, Kerchunk. But I was attempting to max expertise as much as possible w/ a couple of upgrades that I received this last week (shoulders, shield). For this reason, I dropped the defense enchants on chest, shield, and back to see where it would take me.
Not sure it will stay this way, just getting opinions on options. Yes, defense is extremely good.