That would indeed sound a lot better idea, but preferably the device would just include HDMI-output and would enable "docked-mode" when it's plugged in to a suitable HDMI-device and a charger. I'd hate to have to use a vendor-specific dock every single time.

Though, I still can't really think of any useful scenarios for using all 4 cores except games. Perhaps development on-the-go, but even that would be a much better task to do on a normal desktop PC.