Perhaps I have not been clear enough.
The idea is not to have just a program, to design panels. The idea is to be able to switch to another usable panel, replacing the active KDE panel with another KDE panel, quickly.
The idea is about a program that can save and load panels. Instead of configuring another clock, menus, applet, special button and so forth, the user just loads a pre-configured panel with a single mouse click, replacing the current running panel.
As for the different icon schemes, it is basically the same idea. Not a design program for icons, but saveable icon schemes, that can replace all the current icons on the desktop wallpaper, with one click.
I think "loadable KDE panels" are a nicer idea then "loadable desktop wallpaper icon schemes". I think much more people would find it handy to get another running panel with a single click, then different icons on their wallpaper with a single click.