Revenue. Booster donations are way down because of the economy, so schools need to pay for sports programs how they can. Basketball is one of the few college sports that actually make money, so they need that revenue to pay for other sports. This gets more revenue to more schools, and doesn't negatively affect the teams involved in the tournament in any way. Well I'm sorry that the NCAA didn't realize they needed to fulfill your requirements of what benefits needed to be met, but I think "more revenue without much in the way of negatives" was sufficient for them. Increased revenue is a given. Obviously, that's why they're considering expansion, and it's why they'll do it, regardless of the public perception of the move. It's pretty obvious that, in this thread, people weren't debating the revenue benefits of expanding the tournament. They're debating how an expanded tournament affects the event itself. If you can't figure out the distinction between the two, you're kind of an idiot.