I would like to suggest the following improvement idea:

Can we create an official GitHub/GitLab repository (which can be a mirror) so that:

1. Contributions becomes easier with "Pull Requests"

2. Port reviews can be done openly and transparently

3. Allows everyone to maintain their own ports with upstream pull/merge capability from the official repos.

Hooks / Triggeres can be used to automate push/pulls after merges on the main or mirror git repos so that things are kep in sync and automated.

This would allow those who have no access to Core/Opt/Contrib to easiy contribute via pull requests and maintainers can simlpy accepts pull requests to have them merged, instead of implemented changes themselves. (more efficient and effective in my view).

Best regards,
Shin