A Yop Sign? A Stield Sign?

Gary Lauder, a venture capitalist, has an idea for combining a Stop sign with a Yield sign.  The idea is that at some intersections, particular T-intersections, many times it makes no sense to have Stop signs at the top of the T, the 'thru traffic'.  A Stop sign should only be required for the leg of the T.

Overall, I like the idea, but need more information.  The article almost had me convinced that it is a good idea, but the video or Gary speaking at a TED conference left me unconvinced.  I wish he had been given more time to discuss his idea more fully.

Check out the article and the video at the bottom of the page:  Stop the Madness, Yield to Progress (Wired.com)