I've allready tryed all ways of RAF pwrleveling the best and fastest way 1-60 is instancing u can really get 1-40lvl in 5-6hrs total played you don't need to run through locations, continents. You can just catch your mage and teleport your team.

Spec your mage frost\imp blizzard(without permafrost offcourse!) the pulls ar simple running around and grabbing mobs fn blizz\coc with new icebarrier thing it's more easier.
1-8 questing(the best way @ troll\orc start location)
8-14 RFC
14-22 WC
22-30 SM Gy\Lib
30-40 SM Cath
after i recomend you to do tanaris\hinterlands quests and done this @ Strat. Only one problem here is instance entrance cooldown. The allys instance lvling is much faster...
P.S i'm sorry for my english, actually i'm Russian :sleeping: