I believe that our tanking 51 point talent should be either:
A) Revamped
or
B) Removed
Why? Because shockwave is pretty much useless against bosses. Yes, it does some damage, but the stun mechanic is pretty much wasted.
Its easy to see that this 51 pt talent was meant for us to AoE tank trash better, while the other classes still produce much higher AoE threat than use.
Yes, I do admit that it has its uses on some bosses, Razorscale, but half way through the fight, that usefullness fades away.
My point: We should have a 51 point talent that we can take advantage of in every single fight.
Lets compare the 51pt tanking talents of the other classes:
Paladin
http://www.wowhead.com/?spell=53595
A 3pt cleave with 4 times your main hand's DPS
Druid
http://www.wowhead.com/?spell=50334
A 3pt cleave with no CD and fear immunity
Death Knight
http://www.wowhead.com/?spell=49184
A radial AoE with a disease glyph
or
http://www.wowhead.com/?spell=49028
9 second possible seperate weapon mirroring the DK at half DMG
If you compare its easy to see that the Warrior 51pt talent is under par.