spellhance shaman are as stated before easily top 2 or 3 best 1v1 classes currently in the bracket....no contest there (rogue and sl lock being the other 2)
Id gladly take one in 2s or 3s.
Also, I was playing my spellhance shammy (with slightly more int over a touch of sp) as heals in our 3s comp (shammy, lock, hunter) and we were doing extreemly well with it (beating teams from Pro and ATW in cyclone). We also run the comp with my priest instead of my shaman and the results are similar, with the exception being Rogue teams are much easier with the enhance shammy healing. I think you are vastly underestimating the healing and damage potential of a well played spellhance shammy. Beyond that there are very very few classes/specs that match up well vs a properly geared shammy like this, most matchups are very easy, which creates bad mismatches for a lot of teams.
Ive hit 1200 WF crits with my shammy. Rare, but it happens, tbh im normally using flametongue wep anyways.
People have argued this with me...from a theorycrafting view of things, I guess I can understand why it might be hard to imagine just how amazing this spec is...As I said before, the only way to really know is to go out and either play one yourself, or group up with one for wsg or arenas and just find out for yourself what they are capable of.
I made
THIS THREAD a while back, it might have some more information for you. Try to ignore the sheer number of trolls that posted though. The spec was good then, and 3.2 brought a lot of buffs to shaman in general making it even more viable.