Personally I am using some old established institutional methods but in some very untraditional ways, and it is working. We are working out of a church plant that is very institutional but very missional. Our church is only 18 years old, and has averaged birthing about a new work a year. We have maintained some appearance as a church with a campus, building, etc., but we have been purpose driven in that we have carefully tried to see that everything we do, build, etc. is plugged into our purpose. That institutional setting has given us a place from which to move out into all kinds of venues, never in LARGE ways but in small entries into Hispanic, Muslim, Chinese and Russian people groups.
Initially we faced some opposition from AMD's, some even demanding to know by what authority we were planting a new church, especially since it was in the geographic territory of another association. We had to work through that, and for me personally it was an epiphany that our authority is the Great Commission. Thank God, more and more AMD's are really "missionaries". Some ARE still just oiling the machines.
But God works through the old and new. I DO believe that when He works through the old He has to totally transform it, and He faces many more obstacles working through the old than through the new. However, HE IS GOD and He really can do all things. Nothing is impossible with Him!
When we recognize that the Great Commission is the authority, then anyone is free to start something new, even without the blessing of another congregation, though that is a good thing to have. People have challenged us when deacons baptized new believers, but it was New Testament practice. Old institutions have a tendency to maintain the status quo. New things beget new things.
Hermano Jose, the Bivo Joe