I should have developed a little bit more but I didn’t want to start a war🙂
Basically, the goal is to hide things as much as possible in this « all purposes » menu. I find it pointless : if you hide things, you tend to forget where they are and it requires one more click (or movement) to do basic things. I would have prefered 5 menus on the kicker dashboard (you can achieve this using KDE 3.X) rather than one menu hiding 5 sub-menus…
For instance, realize how many time you will loose moving your mouse when you try to log off or shut down comparing with KDE 3.X.
Here’s a link to a website dealing with this problem. I find it horribly difficult to navigate through it : http://www.dontclick.it/