Andrew,

as I reread your post this morning I see a lot more there. Good stuff. Our networks are diverse and multilayer. I guess I would restate the challenge like this:
"How do we sustain and influence this diverse and multiplayer network, reconnecting Christian and non-Christian elements, while maintaining a real and incarnational presense in embodied communities of faith?"

My wife and I have to date taken the approach of simply inviting people into our home on Sundays. Then during the week we connect with individuals who need our time and attention primarily, and then as we have time and energy with others. And we encourage those connections randomly within the community also.. though to date we still are the center of that initiative. THis needs to change.. but because our group is mostly needy and only about 30% Christian, it's a challenge to build that kind of caring.