#12 - Feb. 20, 2010, 10:41 p.m.
We made those changes for a few reasons.
Basically, they are balanced around more-or-less 100% uptime now. We think talents of the variety when X crits, now you can do Y are cool, but these auras really weren't in that category anymore. They were just cute ways of getting a passive buff up. Nobody tended to think Leader of the Pack was boring because it was just on all the time.
Removing the constant application and removal of these buffs (through both the passive aura and the range increase) might improve performance a tiny bit, will clean out your combat logs (which actually improves performance too), and reduce the UI and in some cases spell effect spam, which might make combat a little more easier to understand.
There are some auras where location on the battlefield is supposed to matter, such as totems, the imp, shouts, and paladin auras. Those didn't change.
