I'm also looking into Enhancment shammys now days. and have been going through specces etc I did try 4 enhancment shammys in wrath (bad geared tho) but it worked out quite well even with poor setup then.

Their Earth Bind used to remove all snears including all kind od roots, but then blizzard have changed so much around this kind of mechanics so atm i actualy think that they dont, but If they do, then this is for sure a really strong combo since they are basicly unroot/snearabol, unfearabol, and they cant really die in the first 30 sec with wolfs and instand heales up with a healer looking after the focused target ether. And there is nothing wrong with their dps for sure, tho i think that most of their instant cast will be going to be used for heals and not bolts, atleast in the begining. With a clear setup to show when all shammys got melee storm and 4x heal on same target, this should be a quite strong combo. Might get some mana trubble in longer fights.