I like the mock up in the OP much more than the IGN one but the main problem in both concepts is that you can't easily and effectively use motion controllers in those.
Just want to share with you two of my own ideas. The first one especially I think hasn't been used by anyone yet and could be a good way to tackle this problem:

And here is the second one which is less original except I like the idea of an additional base for the screen and I don't think anyone really used this idea either. This would also explain why the sensor bar is included in the controller. But honestly I prefer the first of my two concepts. What do you think? :








