The players are what makes or brakes the game in the long run I believe!
So I would go with that great idea given to you in a prier post to ask the players.
They are loyal to you for each of there own reason but as a whole you might find something great to work off of that might help build the player base. I personally value each and every player we have and that stops buy. They are all great and bring with them something new and unique in its self.
Just my small bit of rambling, hopefully maybe something in this is helpful! If not the greatest of luck to you and hope you find something that will easy your mind.

Someone any of you can pester or ask something of when ever you like!
The Rock crusher of untamed lands
Sargon