Thanks for doing what you are doing, I especially appreciate your crossposting information between projects and this way connecting different groups of people and slowly growing them into one community. It must be a tedious work for sure, as a gardener of a community by myself, much smaller, less active and not very productive, I guess I can understand you to some extent… and I believe sometimes it’s also ok to let it go and it’s ok if your garden is not that perfect 
(btw I strongly prefer English gardens style to French one, might be a good inspiration/metaphor/parallel for open source projects maintenance too…)
I wanted to cross post a link, I’ve read descriptions of top categories and looked inside what do people post there, started this topic and looked inside each category again, and I still don’t know where does it belongs:
This is the link I wanted to share: How I recruit and mentor contributors and how you should, too - 📣 Sustainer Talk - Sustain Open Source Forum