but that means within a week not only do people have to post their pieces on the subject, but also post idea for the next subject?.. well, its possible but sounds even more messy.
How about this, we simply, by some random method, pick a nick out of the all the people who submitted pieces for one week, if the random choice picks the same nick 2 weeks in a row then that person can submit pieces for the next subject but is automatically not included in the list of voters for the next subject.
I think this will strive to ensure most people get a chance through randomness, and that one person dose not keep getting to choose the subject too many times in a row. Also takes the competitiveness out of it (which i never really wanted) and puts focus solely on fun