Frankly, I'm not sure there's really enough traffic on this forum to warrant additional sub categories. I think sub categories really only become useful when there's just so much posting going on that you've got pages of threads being posted to every day. For example, it's 6pm EDT, and so far today (18 hours into the day) only 12 threads have been posted to. So it makes it easy at a glance to see if there's any activity which is of interest. It also means that threads don't get pushed down very much which means it's not likely your thread will go unoticed because it gets pushed 3 pages back in less than a day. That just doesn't happen here.