Discipleship is the umbrella of missional communities, it is what everything points to.
Once this is clear it helps to answer everything else about missional communities and are church. Things like: what do MC’s do when they meet, what is the point of serving, eating together, how do we evaluate the health of an MC or MC leader?
While an MC lives out the identities of a servant, leader, family and missionary, those are all fuel for discipleship. Discipleship happens while we do those things.