Moderation and account creation defeat the purpose of anonymity. Yeah people are going to say disgusting and awful things that are not socially, morally, or altogether agreeable. However, this also limits what people with good ideas who wouldn't normally say them otherwise would say. Only idiots will speak out and then people with actual intelligent ideas will naturally be reluctant to share them realizing this truth.
The garden is but a dream of the gardener, otherwise it is just nature.
This zen principle is quintessential to understanding our own flawed prospective of our environment, and how we effect it. It can be applied in all manners and forms. The first that comes to my mind in this instances is that we must be willing to accept some nasty, ugly, unwelcome things and tend to weeding out the more critical problems of our garden, so that the more beautiful, majestic, and noble concepts may flourish.
The good can not exist without the bad, and we must focus on identifying actual problems instead of focusing on ones that haven't even grown to fruition yet. We need to find a balance soon. I fear that the disillusionment of "the garden" concept will further kill the drive of more tf2 players; just as Kudzu will grow, block out the sun and water from other plants.