LF advice: Warrior PvP and Mage PvE
Actually, frost and fire are winning out. Arcane just suffers too much due to mobility.
Having said that, I still see a lot of arcane mages. You will need to learn a fairly new strat with burn phases and maintenance phases.
Fire still values haste, often over crit because we can't get enough crit at current gear levels to make hotstreak even close to what it was at the end of wrath. Haste gives fireball/frostfire bolt better cast times and these are frequently 35-50% of our dps.
"he doens't need healing, he doesn't need healing, he doesn't nee-WHAOSHIT!wtf was that man!". Please stop leaning on TDR. -Teng