What I think this shows is that people aren't interested in the Challenge quests. Granted, Lammania hasn't had a large population before, but this is by far the worst I've seen the population of Lammania since I started visiting. And I think that's a bit of proof on how off the mark the development of the current content vs the wants/needs of the player base.
They should kept the challenges as limited time only content. Open one event for a 2 weeks closed it and open the next one a week or two later. Dress it up to mach the seasons or the special occasion.
HEY, I'M TRYING TO SOLVE THAT!
STOP TOUCHING MY PUZZLE!
TOUCH MY PUZZLE ONE MORE TIME AND YOU'LL BE SORRY!
PEOPLE LIKE YOU ARE WHAT'S WRONG WITH THIS GAME -- I QUIT! AND YOU SHALL DIE!