Since October is nearly around the corner I have an idea that will get more people to join the events.
Treasures of Aht Urhgan has been out for nearly six years and SE still has not made the Mamool Ja, Lamia, or troll beastmen costumes. Seeing how two of the Ark Angels were made costumes, this would be fun in town with the 3 main beastmen of ToA. This would also lure more people into the Halloween event.