I'm absolutely open to supporting self-hosting under some kind of enterprise license, similar to Github. If this is something you're interested in, shoot me an email and we can try it out.
I would be interested in a self-hosted version as well; though have additional questions about administrative items. A return to forums and not a 'feed of high engagement' is sorely needed I think. Unfortunately, so are moderator tools and certain things of a web application that people have come to expect.