Well, I know of a few that have been suggested, I'll post them in a sec but I don't support all of them. Keep that much in mind.

The summarized list:

• Desire to not have any negative comment be deemed as a flame or moved to the flame forum
• Not enough moderation, so Sov does most of it (poorly), need new flame/chat mod. Not just RS.
• Tired of mods editing posts and other censorship, want free(er) speech
• Swearing rules suck. I want to curse.
• Overly strict rule enforcement, but not for staff? If staff is going to enforce, they need to be removed for breaking their own rules. Simple. Not going to remove abusing staff? Why should we follow the rules then?
• More warnings, less insta-ban
• A thread going somewhat off topic doesnt need to be closed
• Less closing/trashing of threads that could be good or are controversial (staff flame, por ejemplo)
• Don't need to be told how to behave by someone who breaks his own damn rules anyway

I think 2 or 3 of these were gathered from D3V.