To all the people complaining about playing through old world locations:
They are most likely phased. They are different. Sure, they may have a similar layout to what they previously had, but there is going to be so much new stuff added in there. Imagine Thousand Needles now flooded from the sea...
It isn't like you are going to go back to Freewind Post and all the enemies levels have been changed to 82, and the quests reset. It's as if while playing the world has actually changed due to some event in the game. Am I the only one who is a little tired of the world remaining as it was since the release of Vanilla? Somebody joked about the inn and the bridge that have been being 'built' since release.
Outlands is dead. Those 'new' static worlds serve only as a function of leveling now. Wasted content. Northrend will likely follow the same path.
I'll repeat what I said earlier:
I'd rather fight in a dynamic world than continually jump to new static ones.
Wrathgate was amazing. I'd be MORE than satisfied if 80-85 was filled with Wrathgate like events. I don't know about the rest of you but killing 20 random wolves and collecting 15 pelts is more of a cop-out than this.