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They should put the fan in the mouse facing downwards and add some flexible "skirts" around the edge to make a hovering mouse. It'd be completely impractical, since you'd have to use it without applying downward pressure, but the "cool factor" would be very high.
Also...As far as that cable catcher goes, that's pretty cool but they need to come out with a mouse bungie.. Razer is the only one that has a production one at the moment (the only other ones i knew of was steelseries an they discontinued theirs) and the razer is specifically built for their mouse cords; my steelseries doesn't work very well on it.. had to do some modification to the wire channel.
Is Razer really the only current maker of mouse bungees? I'm pretty sure I've seen many others around the web besides just Razer...