> it probably won't work
You could as easily have said the same thing about HN at every point in its history, yet for all its weaknesses it has managed to survive as a semi-ok place for online discussion far longer than human nature, statistics, and every internet law would have predicted.
That didn't just happen by accident. To stave off inevitable decline has been the main intent behind the design of the site and all the work on it. So, bad as things sometimes appear and critical as everyone sometimes sounds, it's worth remembering that HN has a track record of finding new things that work—for a while—at slowing decay.