You asked if you should start up a quilter's club. This didn't really sound much like a club. Clubs usually have guidelines or rules set and agreed to by the members, everyone helps in the work and prep and cleanup and rotation is a big thing unless it is held in a public location. Are there membership fees?
My biggest reservation is that none of your problems are solved at this point and unless you decide to change and fix those issues as a group, it is a no brainer.
The other big question I have is.. does your CLUB have a focus.. like making quilts for battered women or for some other cause besides their own personal gain? That is when and how a club bonds and supports each other equally is when there is a goal for the group or the club.