It's a good question, but an impoverished blog post. There are no Big Ideas since the Desktop Metaphor was discredited. That's not to say design has fallen asleep. You can of course get highly trained highly competent and highly experienced design inputs to a product. But, it's more about filtering what works from what doesn't. Who is reaching for a new paradigm?

Maybe Facebook's buy of Occulus Rift will ignite an arms race in 3D design that leads to something really new, if the daunting literalism of 3D can be overcome.