A better moderation system is only useful if the people on your site have a long-term vested interest in the site. This is why comments at the bottom of a CBS article, linked to by Matt Drudge, requiring no sign-up for posting are so hideous and always will be.
The only thing requiring identities for posting accomplishes is pushing the agenda of forcing people to use their identity online while silencing those who, you know, don't want the fact that they commented on a youtube video with a reporter who fell out of a barrel of grapes and onto the ground below to be part of search results and something that everyone in the world (including employers, future mates, friends, in-laws, family, etc) might come across.
Google, Facebook, and others want you to use your real identity online because they want to be the hub facilitating all your identity needs.
When you hear pushes to "end internet bullying" and other bullshit, it would do well to remember that these are all ultimately efforts to eradicate anonymity from the internet and little more.