That may be a good idea but it wouldn't work for most forums here. It definitely wouldn't work for Moreless. The problem with Moreless is that Moreless’ followers--and likely Morless himself posting though a false identity—viciously attacks posters in debate forums. Then attacks them in the Moreless forum and bans them so that they can’t respond. Bottom line: he bans people who do not harass or violate TOS. Giving Moreless--and many of the less ethical forum owners--more control of any kind would not help, it would only make the situation worse.
Another problem is that posting through a moderator will discourage new members from ever posting. By the time a post is reviewed and posted the conservation will have ended and few people, if any, will see the original post.