The problem with shaman scaling, isn't so much that we won't be good in Tier 7 level gear, but that down the road, with higher base damage and lower damage from stats/spell power/crit etc, the better the gear gets, the worse of we will be.

I'm not sure exactly how the scaling goes, but the theorycrafters at ElitistJerks.com are worried, while the Blizzard people say don't worry a small buff is coming.

Lava Burst is supposed to be 40-45% of our damage. Since it has a fixed cooldown, haste is no benefit, and actually at certain percentages of haste it messes our rotation. Critical is also wasted, as the spell auto crits every time you cast it (if Flame Shock is up, which is should be every time). So almost half our damage is not improved at all by haste or spell crit, which are two of the main caster stats. The dot component of Flame Shock is not improved by either of these stats either. They do boost the lightning portion of the equation, but are effectively half as good for us as they are for other casters.

It's good to hear that we're powerful pre-T7 and at the T7 level. Hopefully the scaling issues are addressed before the raid community is wearing T8 and the pvp'ers are in Season 6. It sounds like we're competitive enough, given our buffs, for T7 pve play, and Lava Burst is enough burst to make a shaman team dangerous.