Or maybe, people who want to could be given mandate to introduce their OWN sub forum.
It would be made clear that it would be their sub forum, so that people know that the creativity behind it is the responsibility of a certain person and cannot be blamed on cyclechat management as a whole. Equally, however, they would be expected to mod it themselves, and if the overall mods feel they are not doing a suitable job of modding it, then they would be warned, and maybe overridden.
If the overall mods have to step in too often, then that person would probably have their sub forum taken off them.
If the overall mods did step in, it would have to be with a lighter touch than they would use on the general CC forums, as the intention would have to be solely to remove anything that really can't go - for instance spam, libel etc, rather than to shape the way CC is intended to be. On a specific person's sub forum, CC management can wash their hands of 'the way it's intended to be shaped' to whoever's sub forum it is.
On the other hand, the modding that the sub forum owner applies may be MORE draconian than the general CC forums, which may be the decisive thing that shapes the character of that sub forum and may be what I see as what could make or break it.
Users can report in the same way they do now, but they have the option of either reporting to the sub forum owner, or escalating to the real mods.