I appreciate the suggestion, but I don't have any plans for the site currently. That is not to say I intend to shut it down, just that I haven't been able to put any time into it.
Given the advancement of other completely open and free community discussion tools, I'm not sure I have any reason to pick another forum software, or to custom build.
If I had the time, I would have liked to custom build. Mostly because I think there are useful things relative to our community that don't exist in the wild.