I understand what you’re describing as something that would be useful to all Free Software communities, including those focused on creating a piece of software (such as fedeproxy). There exist guides for some of the topics you listed (attracting contributors etc.) but when a project such as fedeproxy begins, it is not trivial to compile them and decide on a sensible course of action.
Maybe a platform like you suggest would help. Or a guide that includes all aspects, a reference manual that people involved could rely on.
Or the other way around: FedeProxy would be one of many examples that a reference guide / template could use to demonstrate a particular facet of what makes a Free Software community. For instance:
- Self hosting: Fedeproxy is 100% self-hosted & has no dependency on proprietary services or software. See how it works with infrastructure as code based on Enough.
- Transparency: Fedeproxy is transparent by default, the only exception being personal data (names, phone numbers, adresses, etc.). See how it works for funding or monthly meetings.
- etc.
I have the feeling that the real difficulty here is to create a consistent set of tools/methods that are a good fit for a wide range of projects in the Free Software world. For instance I’m very motivated to work in horizontal communities and a reference guide/platform that does not include that would not be a good fit for me.
Of course it is possible to try to create a guide/platform that covers both horizontal and democratic communities but it significantly increases the difficulty. Each have their own set of unresolved problems and they heavily influence other aspects such as communication or technical development.