In case anyone was interested, I finally updated the EZPvP mod for beginning PvP players to include the Mists of Pandaria abilities. The basic idea is that it consolidates buffs on players into easy-to-see icons that let you know basic information.
For instance, Shadow Dance from rogues, Ascension from Shaman, and Recklessness from warriors all have the same effect - they make one big icon that indicates the player is extra dangerous, so you probably want to avoid him, cc him, or use a defensive cooldown.
If you're just getting into PvP, this may be helpful. Comments welcomed.