Keep it simple, straight forward, handle like a Lotus and get at least 50 MPG as a commuter. In fact, rather than claiming to out Porsche a Porsche, I'd start a new class of car and ask why Porsche hadn't done it. I'd make sports/commuter cars. What better way to get people in 50 MPG cars than to make them fun as hell to drive?
Well said. I do think we are coming to that. One does not need a 500 HP car to enjoy driving. As you said, Porsche has strayed far away from the original concept. One could posit that Dr. Porsche would have found the current 911 turbo to be quite unacceptable.
I do think we are coming up to an era when we will see some fascinating and fun cars coming down the pike. That is why I love free markets and competition. The evolution is fun.