Yeah! Like when automakers moved the shifter from the steering column to the center console. Drivers were like "Hey, this is disorienting me! I want my lever behind this turning wheel thingie."

I don't think users of PCs are so stupid that an interface that places their shortcuts on a sliding desktop will cause them such anguish. Anyways, the market for people who buy Windows upgrades for their existing PCs is very, very small. People will continue to use XP or 7 until their boxes die 7-10 years later.