Based on the video promo, we can see that there will be an exceptional amount of vendor support required from razer. For them to support all games effectively would be a tall order...
Quakelive, quake 3, league of legends, and wow would be amazing on this mini computer... especially if it had the balls to run them smoothly and give us a good way to play games. Being able to run emulators on it as well with the keyboard acting as the gamepad would also be nice, especially if they had an option for shoulder buttons as well. If it doesn't, they're missing they're calling big time.
if razer doesn't use this as an infrastructure for future products they're going to just end up breaking it and EOLing it. Basically, for this to work as advertised and provide the experience we see in the slides, it'd have to have a longevity of something like SLI for it to work well.