they made a talent called "improved moonkin aura" that gave 3% spellhaste. This is now nerfed to _1_% spellhaste I'm afraid.
The upside of bringing a boomkin to your team is:
+13% spelldmg on target (Earth and Moon)
-5% melee hit on target (Insect Swarm)
You don't have to spec Elemental Oath on shamans
Mark of the Wild and thorns (minor buffs)
Some CC (Roots and Cyclone)
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And then you can see if that is better than what you lose in totems etc.
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Wrath of Air is still 10% spell haste and stack with the aura.
For all your expansion needs: http://wotlkwiki.info also www.mmo-champion.com