What some now call 'emerging Christianity' or 'the emerging church' is not something you join, establish, or invent. You just name it and then you see it everywhere- already in place! Such nongroup groups, the 'two or three' gathered in deep truth, create a whole new level of affiliation, dialogue, and friendship.
We don't have much wisdom about the second half when things really open up and end up looking a lot more progressive. In my own Catholic church, for example, we're sort of circling the wagons today by thinking that more moral strictures, more exclusionary rules on this or that, that that's going to do for the first half of life. I don't think it really does.