But some of them will be. If one method doesn't work, scrap it and try another. Developing a healthy core group is the goal, and methods used to accomplish the goal are secondary. Don't allow yourself to get hung up on a method. The group has a sense of cohesiveness.
Folks come early and stay late.
The group has an identity. The group has a shared vision. The group is drawn closer as the dream matures. The group allows conflict. Conflict that is allowed to surface can bring the group closer.