Quis custodiet custos?
It's messier having us moderate ourselves collectively, and toes get trodden on, but I think the risks of having a system of official moderating are too great. I think the present situation where it only happens in exceptional circumstances is as far as it should go.
One minor change that might help a litle would be if the word "optional" were taken out of the wording of the start bnewe thread facility. It'd still be optional, but I think the change might encourage newcomers to have a look at the prefixes available. As it is, it seems like a direct invitation to people not to use the prefixes, even when there might be a perfectly suitable one.