I hope you enjoyed (or are enjoying!) your trip to level 85 so far. I loved every second of it, but from what I understand, I was lucky. My cutscenes all worked beautifully and I never had a bugged quest. Still, the stories in the new Cataclysm zones are awesome, and I hope you get to experience all of them.
I hit 85 on Thursday. On Saturday afternoon, I finished my first heroic (Stonecore) with a group of friends. These are players I know are extremely competent in their classes and roles, and yet we wiped several times–Ozruk alone got us about 5 or 6 times. Was it bad luck? Were my friends drunk? (trust me, it’s a valid question).
Nope. Heroics once again require practice and skill. Yes, we were running at the bare minimum gear requirement, but that actually had very little to do with it. While some of the encounters would certainly have been faster were we doing 12k dps instead of 6-8k, the mechanics of the fights themselves will keep these bosses from being trivial for quite some time.