Posts in the subforums just don't seem to get anywhere near the number of eyeballs that topics in the main forum do. It's a shame, there's some great stuff in the screening room sub-forum. I think the issue is it's just too diffuse, with each video in its own thread (and sometimes, if people haven't embedded it properly, it's another click away), plus some things are in the GH4 or ML specific threads. I can see the point of gear-specific threads, but I don't just want to see stuff shot on the same cameras that I have, and I don't think its healthy to have a gear conformity attitude (remember Kendy Ty!)
I think screening room would work really well as a long single thread. It would be a one-stop site where you could see what people on the forum are up to and get some inspiration (or, if you're watching one of my contributions, look at an urban cityscape you've seen in countless other videos cut to a hip soundtrack with some speed ramping and a LUT or two. Yeah I know my limits)