Once every one has there fill on loyalty points and black rock stew, the event kinda loses its luster. I would suggest added some new armor sets to the war chest much like the scout armor and sorcerers set but different theme. Say.. Blackrock Encrusted Dragon Armor for the Bane side and a Ophidian Hide suit for the Ophidian side. I think it would give people the desire to keep fighting and interact for trading pieces.
