I think it would be a good idea to add a wiki to the forum. After all, the benefit of a forum is that it enracinates over time. So the longer it’s around, the richer its history will be. This could increase user engagement by providing a sense of belonging – which is something that you can’t get on a social media platform. That’s what makes communities like 2b2t so special.
I wonder what software is the best, and how it could be hosted. I obviously wouldn’t post updates to the forum, but it would be pinned.