You repeatedly say that Discourse failed to bring the contributors, but if you look at the Change discussion threads, you will see that you got new people participating in them via Discourse. They maybe do not participate in the way the ideal spherical Fedora contributor in a vacuum is supposed to participate, but they show up.
And it means Discourse serves its purpose in making things more accessible.
The issue is that we do not know what do next, once it does. We brought new people, but we are now burning out from actually talking to them.
It is indeed a problem, but going back to hiding from people in a dark corner behind an artificial barrier is not solving anything.
The things I would consider doing instead:
Increase the split-brain
Don’t panic yet, let me explain.
The current split-brain is created based on the wrong criteria - the tool used for communication. We try to assign some imaginary meaning to that criteria, like a “better quality of discussion”, but it is a lie.
But there are different approaches which can be used to structure large discussions.
One model is the lines of support
The other is rounds of hearings.
Both are essentially examples of a “split-brain” situation, but done in a controlled way so that they help process the input from different audiences without making it particularly overwhelming for a small chosen number of decision makers.
How it might work in our case?
In the first round of news-making Change announcements have a link which points to a communication channel dedicated to Fedora Changes but not read by FESCo at all.
It would be a catch-all place, a first line of support for questions like - What is Fedora Change, will this change impact my user workflow, is there a workaround for this particular problem? etc.
It can be a Discourse thread. It can be a Matrix channel. It can be both. Owned by the Join SIG or other support-oriented groups.
Change Owners would be encouraged but not required to participate in them.
In the second round create a proper discussion thread where FESCo can participate and discuss the change in details.
Have it heavily moderated so that any non-useful comment will be removed without any need for explanation and justification.
In the third round move to a pull request in the Git Forge for a formal vote and approval.
Have a shortcut to go directly to the third round for certain changes.