A new Tribute system, allowing guilds to pool tribute points to purchase various effects
A "task system", intended to "allow players to have quick solo content while waiting for a group to form".
An expansion of the character Title system, allowing players to choose which available title their character could have, as well as adding a great many more, including tradeskill titles like Expert Chef
A ninth spell slot, which could be earned via AA purchase
A voice macro system, intended to allow players to make audible comments to each other.
The expansion's final zone, Citadel of Anguish, gained particular notoriety among players who raided in the game as a result of the Overlord Mata Muram encounter. Widely considered the most difficult raid boss relative to its time in any MMO, the encounter had a unique mechanic which would target a random member of the entire raid and require a specific action take place within a few seconds of the emote or else the raid would be completely wiped out. While the mechanic is now commonplace today, during its time the boss was widely considered "impossible," to beat until Cestus Dei on the Veeshan server conquered it on March 23, 2005. It would be months before another guild in the game would defeat the encounter.