Nah, fire mage doesn't impress me at all. It looks pretty bad compared to most new specs in WotLK tbqh. Blastwave will be good for defense against melee and people who are chasing you, but you'll get sploded if you try and get in range of a 5boxer shammy. Firemages still won't be able to cast through groundings, and shaman now have Thunderstorm to deal with melee range mage aoe's.

I'm just not seeing it. From a mages point of view I don't know how I'd deal with a shaman boxer as fire unless you got some lucky molten fire procs or living bomb ignored grounding totems. Fire mages are too fragile and require a lot of finesse. I don't know how someone would be able to effectively play more than 1 at a time when there's a lot of jump-turn-casting and such that is required to do well.