I got an idea after many Raspberry Pi projects I saw so far. Unfortunately I don't know how to make it. Maybe someone can do it.
Well, the idea is to create a box (any shape is OK with openSUSE artwork). Inside this box will have a raspberry pi (or any other cheap ARM machine). Save GNOME and KDE isos on SD card. Have 2 buttons connected on the GPIO on Pi.
When you plug in the USB and press the GNOME button, the machine will run the dd command and create GNOME Live USB.
Take care, Stathis