When I came onto Mudcat I was not aware of how it was organised but the fact that there was, on the whole, adult discussion without the idiot, meaningless chatter that seems to dominate a number of sites gave me reason to stay.
The site works for me just as it is. To my knowledge I have never had a post deleted and, IMHO, the moderators do a good job in weeding out the crap. I certainly would leave if there was no moderating being undertaken.