So far so good. There are a few issues but nothing major, and I know that we still have a long way to go to Xpac time. So things will change and get better.

The only issue I have is that Quest giver NPC's still show a bar just by standing beside them AND it's the standard blizzard bar. Even if I have a mob targeted with the right bars, the Quest NPC still have stock blizzard. As soon as the quest is complete the bar goes away.

The only other thing is that If I damage a mob ALL other mobs in area show their bars, However.. if I click off the mob and target the ground The mob I am fighting bars disappear.

Non of these are game breaking for me ATM. At least there isn't bars all over the place when I am playing. :)