So after taking 30 minutes to think it over, this is a function i would be willing to pay to have added more quickly. Dose discourse have a list of approved developers who can work on implementing this into the code for our current site and then share it with you so we can get a version 1 of this implemented ASAP!!! 
This is totally the Unconventional warfare concept of decentralized groups but applied to forums. Being able to come and go out of existence and have a pruning/archive structure that can handle the mess would allow for a lot more intense “workgroup” style mini communities to come into existence and if they peter out the whole forum doesn’t go with it. Its hard for me to fully articulate my thoughts on the strategic advantages to have a bunch of sergeants helping to build the community.
Good example, if someone were to write a tutorial and a group wanted to make an even better one, i could assign the project leader, they could have a mini forum to develop their idea in and bring it back to the main community with the whole Development process for the tutorial taking place within the overall community’s assets, but hidden from public view.
end.rant.now 