A couple of problems with that. First you have the noise created by big egos clashing, and second, you’d lose the anonymous “accout made just for this” exposees and stories from the trenches. I think in the former case it would become painfully clear that you’d still find a great deal of noise, albeit from different sources, and in the latter a loss of richness. Plus you’d be setting up whoever ran the site as a gatekeeper or who is a “star” and that is ripe for abuse.