The time is short! The Cataclysm is coming! It is now time to get ready for real challenge again! But before we do that, there are a lot of bad habits we have gotten from Northrend that need to be put away.
1. Never, ever ever pull aggro off the tank.
Today, a mage could burst open his AoE four seconds before the tank pulls and it just doesn't matter. The mobs would die in the next few seconds, armor has far outpaced a mob's ability to really hurt the wearer, and the healer had almost all the time in the world to prevent that sort of death. No more. When you go to the Throne of Tides in Vash'jir, and pull aggro, you are dead the moment that mob turns away from the tank. The mob is going to pound you to within an inch of your life, and even if the healer can pause from protecting the tank, he isn't going to get his heal on you before the mob hits you a second, fatal time.
2. Stop jumping around.
Positioning mobs is going to be more important, especially when CC is involved. A lot of tanks have become somewhat glib about how they simply charge into a fight and you see them bouncing up and down because we all know that the only thing more fun than playing WoW, is playing WoW when you are constantly hitting your jump button. As a corollary to this, melee dps will do better numbers if they are not bouncing as well, and should never, ever do that PvP movement thing where you continually circle your mob, pretending that you can get it dizzy or something.