The question most often asked is 'what it church?'
Why do we meet?
When and where do we meet?
How do we meet?
What do we do in our gatherings?
Who leads? Who governs? Who teaches?
Where do apostles fit in church? What about prophets?
What is the role of elders in church?
And what about the role of women in church?
I have shelves of books about who does what in church. Some going in to detail about what to call people who might have more than one five-fold office (they're supposed to be called hyphenated apostles, or whatever their major gifting is).
There have been volumes written trying to define positions in church, not to mention countless conferences explaining who's who in church. It begins to sound like the classic Laurel and Hardy skit, "Who's On First?"
I think we've been majoring in the minors. We are the church. So how do we be the church in a way that impacts our world? I don't think that continually tweaking our meeting styles and positions is having any impact except to keep our focus internal rather than missional.
Why have we done this? I think it's been easier to attempt to perfect our organization than to get out and be the church. The more inward our focus has become the more we minor in the details of church life.
I would love to see us learn to be the church in the world without all of the trappings that distract us from the mission at hand.