[Pxtl]

GH has a "Discussions" feature for message-boards attached to your project. Same sign-on as GH. Nobody turns it on.

[rmunn]

Ghostty turned on Discussions and made it the first place for users to go report bugs, make feature requests, etc., then promotes those to issues once it's detailed enough for the maintainers to accept: https://github.com/ghostty-org/ghostty/issues/3558

Later, Hyprland followed suit: https://github.com/hyprwm/Hyprland/issues/9854

I'm sure there are other projects doing the same, but those are the two I know about off the top of my head.