On the PTR, I copied over Searsi, my Draenei mage. And got offered the chance to faction change her to a Blood Elf. When some of my Alliance guildies wanted to play Horde, I took the chance to make her for real.
Interestingly enough, things like taking the portals out of Dalaran hasn’t really affected her yet. Such is the life of a mage.
She has been racing through the levels. I haven’t seriously quested in a zone since the Ghostlands. I am sure the Dungeon Quest XP Nerf will have an effect, but I am not sure how much. Especially if you have access to the new heirlooms that are coming. Of course, your own mileage may vary.
The oddest things has been the difference in spells. I leveled Searsia Frost and new other people who chose Fire. Now all three specs are completely viable and I am loving going Arcane. Getting all the signature spells so early makes a huge difference along with the reduction in mana cost for casters. Oh, and getting Mirror Image at 50 instead of 80 definitely make more for a change as I found out in Stratholme last night.