I too play a fire mage & I am also being embarrassed by its low DPS in raids. (ilvl 390).
While everyone else is posting double digit DPS figures in BOD, there is my DPS of 8-9 k showing to everyone on Skada/Recount.
I only feel ok when I am running with my guild .
And when the guild invites a Pug they sometimes comment on my fire mages low DPS. "Can we replace that DPS".
But my guild wont allow that to happen & will kick the pug if they keep that comment up.
On the other hand, Fire Mages are kicking butt in PVP..
And I usually average 3-4 killing blows in random BGs.
It is usually down to one spell.
GREATER PYROBLAST. what a killer.. can take an enemies health down by half.
If Blizzard allowed Fire Mages to use Greater Pyroblast in raids.. wouldn't that be nice..
But you are correct OP.. at the moment in raids , I intellect buff.. provide a table & sometimes spellsteal
That's what I feel are my main abilities in raids are at the moment .