It's interesting what Matt is wanting to find out about the theme directory and the reviewing. I can also agree that if the security issues is a problem with submitted themes, this is really the most important element for any theme; having a secure theme is absolute.

However, what I would like to see happen is the comment Matt has mentioned in the past on a few occasions about the theme rules and guidelines being (I believe he called it) draconian. The review process, rules and guidelines are too restrictive and prevents theme authors from getting too creative.

....this is one of the reasons I walked away last year from submitting themes, the other being the queue wait times. Personally, I would rather have long wait periods if the theme guidelines were not so restricting and eased off to just reviewing of security only.