Championing - In the expansion players will be able to become a champion for other factions. While championing for them and running a heroic dungeon, they will earn reputation for the faction they are championing along with the regular dungeon reputation. This should help reduce the endless grind of leveling more than one character from neutral to exalted.
Herbalism Primary Gathering for Inscription - Blizzard made sure everyone understands that both melee and caster classes will benefit from inscription, and also that the base gathering profession for inscription will be herbalism.
Party Buffs to Raid Buffs - Many buffs that only effect parties will not span the entire raid group. Examples of these changes are Shaman totems, Unleashed Rage, and Battle Shout just to name a few.