Two panels by default in Kubuntu

A lot of people are under the impression that having two panels by default is a good thing for usability reasons (Fitt's Law), space reasons (one panel is too cluttered instead of two), and other reasons (it challenges Windows and Mac users to see something different).

I don't personally agree with any of those lines of reasoning, but if we're to believe that a two-panel approach is good, why not implement it all the way? Why deny KDE all those "benefits"?

Implementation: One at the top with the KMenu, a few launchers, the notification area, and the clock; one at the bottom with the "show desktop" button, the window list, workspace switcher, and trash can.