Have you ever considered an area in your forum for writers to discuss things of concern to writers? You have your marketplace section for writers, but that doesn't seem to be set up for discussion. Just some food for thought.
That may (or may not) be because there is no section that is even close to being relevant to the subject. We may be opening up to a new audience by doing this.
Best case scenario is we get a lot more new members on a new subject, worst case is we have a new forum created for a couple months that did nothing except create a little spam. We really dont have much to loose here.