Well, put out a call to those still on to ask their friends to come back on.
Arrange events to attract those who've decided to quit "just one last time," and then ask them what they'd do to see it continue.
I confess to not being a player, myself; I haven't played in years. I don't have the name, face, nor connections to rally people in-game, even if Segev-the-villain is still there should I try to recreate my account. But those of you who do, if it is saddening you to see people dwindle in numbers, ask them to come back. That is another use for the "other social media" that people have been discussing using to get the story out: re-connect with those who've left. Invite them to this forum, as it seems a central gathering place. Point them to the poll asking what people would pay if it continued. Get real numbers up.