As much as I admire this laissez-faire policy when it comes to trading, I don't think it would impinge too much on users' freedom if the ability to self-moderate threads posted in the Marketplace section was removed. To me, this is the equivalent of being able to curate your feedback- something you would only want to do if you have something to hide. If you look at which threads are self-moderated, I think this trend is pretty clear. Most users' first instinct when they're scammed is to post in the scammer's thread warning others. Unless they're in other users' trust networks, this warning is usually more visible than any feedback they might leave on the offender's profile.
Hopefully the staff will consider making this change. I don't believe it would be a hard one to implement, and I can't think of any significant negative repercussions it would have.
The exchange section is where I have seen the need for the complete removal of the self moderation thread and even the ability to lock thread. Over there, majority of people trading are newbies, I wonder how they did it. Again, some self moderated thread and locked thread over there have open scam accusations against them but no one can post it on their thread in other to warn other people what. The moment they bump the thread with mouth watering deals, its locked for another innocent victims to fall for the scam again.
https://bitcointalksearch.org/topic/goldxcashnet-bitcoin-to-paypalpmwmzskrillnetellerpayeervenmoswiftwu-1517847
https://bitcointalksearch.org/topic/goldxcashnet-is-a-scam-1199197
https://bitcointalksearch.org/topic/goldxcashnet-scam-site-scamming-people-for-years-from-a-locked-thread-2124012