Of late there were a ton of comments about people not getting their coins or withdrawing. could it been that the troll box was closed to suppress this? Could there be a hidden agenda? what do you think?
In my opinion this is the only logical reason why they closed the trollbox. Trollbox was one of the best places to visit for me at least in poloniex as i get to chat with cryptocurrency enthusiasts much like myself.
They had an extensive mod hiring process as well, it wouldn't make sense for them to just fire them all and ditch all the training to move onto being a support unless something major is happening.
It's most probably to stop the constant questioning and get new users into depositing their coins - so that poloniex can pay off old debts. Sort of like a ponzi.