At that point, the poster is in complete control of their status. They decide whether they'll remain on the list or not. I can't imagine a more benign state than letting it be known up front what all the rules are, keeping those rules to a minimum, and enforcing them uniformly. I found Paul's comment here interesting. I try to be democratic on allstartrek.
Users are free to propose changes or exemption so to existing rules.
They are free to speak their mund and if an overwhelming number of users want sonthing, i usually grant it. When someone propses somthing, I respond to the post and ask what the rest of the list wants. More often than not, I'm told that I am being extremely fair. I have told them several times that I want them to be completely honest with me as to what they think. You make decisions based on your objectives.