It sounds like you are ready to multiply into at least two groups. That was the experience our house church went through. By the time my family got involved in it more than five years ago, our group was right around 30-35. There were few families in our church who had homes large enough to gather us all. Besides, we were still growing. Within a few months, we decided to make two groups of 15-25. I agree that smaller numbers of 15 or less is the best for intimacy and accountability. We also decided as a compromise to continue gathering the whole gang together at least once a month in a place that could hold us: an outdoor park, a community center, whatever. The next year we were large enough to make a third group. A few months later, a fourth group.
By this time, we couldn't quite agree on how to form our groups. Half of us wanted to form core groups of two-three families and build on them. Others wanted to literally put their names in a hat and randomly draw names for each group and stay in that group for three months before mixing it up again...[truncated for brevity]
Hope this helps,
Hi Marshall. What do you mean by "getting past the autonomy doctrine?"