I think we need to set up a different area dedicated to YAF Integration issues. This forum area would cover discussion on how to setup YAF with Microsoft Membership Framework, how to setup YAF as a subdirectory, and how to modify YAF to make it fit into the look and feel of your website, including the use of themes.
You guys are beginning to suffer from the popularity effect. You need to consider a couple of things. First, how will you deal with the demands of a popular product? Second, how can you capitalize on or commercialize this product without impinging on the ideals of open source.
Maybe it's time for some YAF consultants to show up somewhere.