Structure

A common misconception (or related argument) about "redemptive communities" or "organic church" is that it is anarchy, that the lack of being an institutional church means there is no structure. This isn't true. In fact, structure is necessary. It is just the nature of the structure that is different.

Structures are needed, but they must be simple, reproducible and internal rather than external. Every living thing is made up of structure and systems. Your body has a nervous system, a circulatory system, and even a skeletal system to add structure to the whole. The universe and nature itself teach us that order is possible even when there is no control but God Himself.

(Neil Cole http://www.cmaresources.org/articles/simple_structures.asp)

As indicated by Cole, the structure is to come from the inside out, endoskelton, as opposed to the institutional church's typical exoskeleton. Institutional structures are focused on preserving the institution, to keep it around as long as possible. The Bible speaks constantly of the church and kingdom in organic terms. Leadership should be about growing structure, not imposing it.

As Curtis Sergeant (expert on the Chinese underground church) notes

In regard to church-planting patterns, external human control over the new converts and churches is inversely proportional to the potential growth and rate of growth in terms of both maturity and size. If a church planter or agency or denomination or other entity seeks to exercise authority to a great extent, then the new church and its members will tend to be dependent and not take responsibility for their own growth or for reaching others. Every time you are tempted to micro-manage, remember this principle. (emphasis mine)

David Garrison observes something similar

Denominations and church structures that impose a hierarchy of authority or require bureaucratic decision-making are ill-suited to hand the dynamism of a ... movement. It is important that every cell or house church leader has all the authority required to do whatever needs to be done in terms of evangelism, ministry, and new church planting without seeking approval from a church hierarchy.

I think another way to look at it is the old saying (maybe not so old) -- first your ministry shapes your building, then your building shapes your ministry. What we don't recognize is other structures, in terms of control, sustainment, etc. shape and restrict ministry as well. We need to let structure come from inside, not imposed from outside.