I can see this being very useful for Software Engineers, although I agree with you not directly for building systems. Scrum boards, build statuses and project statistics are good candidates for this system.

I can also see it being useful as a very general _and_ powerful prototyping tool, one of the demos shows someone making an input controller from a physical spring and a colored piece of clay.

When it becomes so easy to integrate your environment with the computer, I can only begin to imagine what's possible.