I agree it could be expanded and that should be an ongoing project. I would like to offer a personal account of how this happened (clarity about the mission) for me, because it was pretty pivotal in my decision to be an active part of PS.
A few months ago, a few PS participants proposed some specific structuring of the forum. The specifics don’t matter but the basic idea was to wall off certain kinds of conversations so that participants wouldn’t be pestered by people who either do or don’t believe in the relevant gods. Part of the backdrop to the proposal was an explicit claim that PS is about a certain kind of conversation (theological, origins-related, etc.). I read these exchanges with concern, because I wouldn’t be interested in a forum like that. Joshua stepped in with a clear and generous response that made an impression on me:
What followed was an interesting discussion of the forum, its goals, and its unfinished nature. It’s a work in progress.