I personally would love to see a category/sub where you can introduce your Discourse server in a structured format.
I also understand that this area can easily be abused and spammed, but if there was a good setup I think it would provide to be very useful where others can first off know you exist but perhaps also give tips and some of their experience when building something somewhat similar, finally it may help in getting early volunteers who like/believe your idea and are already well adverse in Discourse and community management.