In the last month there has been numerous amounts of these type threads. We have been asking for over 10 years to get a tank spec. Blizzard themselves say they refuse to give any other classes extra specs other than druids.
We are not going to get a tank I am sorry to say it. I want us to have a 4th tanking spec but it will not happen unless the game director is no longer there and they decide to go back on that policy. I want many things for shamans. I want us to get a glide and a double jump but wont happen. Even though we can justify the glide as us manipulating wind to slow our fall. And same with a double jump that we manipulate the wind to give us an extra burst of height when jumping it will never happen.