Whoo, a lot more to process than I thought (including a straight-up heinous pie-graph 
), so we’ll chip away at it.
We Are Open Co-op member Doug Belshaw has written a guide to building an architecture of participation which includes the following steps:
- A clear mission — why does this project exist? what is it setting out to achieve?
- An invitation to participate — do you have an unambiguous call to action?
- Easy onboarding — are there small, simple tasks/activities that new volunteers can begin with?
- A modular approach — do volunteers have to commit to helping with everything , or is there a way which they can use their knowledge, skills, and interests to contribute to part of the project?
- Strong leadership — do the people in control of the project embody the mission? do they have the respect of volunteers? have they got the capacity to make the project a success?
- Ways of working openly and transparently — does the project have secret areas, or is everything out in the open?
- Backchannels and watercoolers — are there ‘social’ spaces for members of the project to interact over and above those focused on project aims?
- Celebration of milestones — does the project recognise the efforts and input of volunteers?
Hey, this sounds like it applies to Self-governing community on Discourse! 
Okay, not being facetious… does anyone know of a project that checks those eight boxes? I’m drawing a blank.