Oops, I meant move the QAT below the Ribbon. At least if you want to be able to read the document title after you've added fifteen buttons to it.
You can still use the minimized ribbon pretty easily, you just have to click on a tab to pull it down. The main advantage is that you can view more of the document at one time. 'Course some people might not be worried about that, especially if you're using a larger monitor. The other advantage is that things are less cluttered. Again, that will matter more to some folks than to others.