You mentioned retention. I wish to reemphasize it. In business it takes three times the effort to recruit a new customer as it does to retain one. It also takes roughly three times the resources the recruit a new employee than it does to retain the good employee you already have.

People are in this club for a variety of reasons. If their needs aren't met they don't vote at elections, they vote with their feet. They just leave, usually quietly and without a fuss, and the club never knows why they quit. It is crucial for the leadership of the club to understand the needs and motivations of the membership.