The World of Warcraft Armory

I feel I have gemmed and enchanted to best balance all of my stats to the best of my ability. Though I know greater performance demands greater scrutiny. That being said I was hoping that I could get some criticisms or thoughts on Gear or Spec choices.

I am finding myself tanking harder hitting bosses now so I am moving toward glyphing/talenting shield wall.

Any thoughts on a secondary spec that I would use in accordance with block gear and work on adds? The cooler the better. Im up for discussing

Hold nothing back, thanks.