Well assuming there are enough "experienced" writers constantly on the forums, the standard of quality writing could be self governing. The writers themselves would maintain the majority of quality control, with the moRAB having to do minimal work.
Well there is a large gray area between being a beginner and being very good. I was thinking of using the experienced writer's forum as a place for the top handful of writers, and the intermediate forum as a catch all middle ground, and the beginner forum for the bottom wrung.
You could even seperate the three forums by writing problems:
Experienced Writers - Pieces of work requiring polish and fine tuning. Focus on connotation, mood, theme, and tone.
Intermediate Writers - Idea refinement. Removing extraneous and unnecessary information. Idea Cohesiveness. Proper use of multiple imagery, metaphors and similies to create an overall theme.
Beginner Writers - Heavy grammatical and Structure issues. Capitalization, punctuation. Overuse of Cliche' and unoriginal ideas. Lack of Imagery, Metaphors, and Similes. Mainly content issues.
If the forums get split they should be open to everyone to read and post in. Where a member submits their work would be the only thing that would be limited.