Well, they could add social/vanity sets and pets to gilding vendor, buyable with new raid/gilding tokens. Adding WB accessories and/or weapons to T2 end bosses as rare drop is good idea too, it will make old boring raids more attractive. FC should add a few changes to world bosses too hitting boss once and then afking on rezz pad waiting for loot/instance change is simply wrong.
Increase chances of getting the purple box for those that contributed most to the kill (most damage dealt/taken/most healing/most time in combat), add range so that player must be reasonably close to the boss when it dies to get reward etc.