mommyfollows at 2012-06-13 18:24:31:
Maybe you wouldn't need moderation if it were private?
Maybe a setup like David Farland's Writers' Groups. I'm fuzzy on the details, but there is a big forum, and smaller private groups within the forum, and the groups are separated by genre. The groups have their own rules and leaders (rules being more about how often you critique others' work, how often you submit your own). And if someone stops participating, the leaders can lock out the non-participants, to discourage lurking.