Certain archetypal features drive the R8's appearance.  The high nose is in deference to the raised footbox that provides for a more ample front undertray.  The longtail allows for more adjustability with Le Mans performance in mind.  The high sided appearance of the monocoque gives the driver maximum protection while the low waisted bodywork immediately either side of the tub reduces frontal area and improves airflow to the rear wing.  Notice how the bodywork between the front wheels has been essentially melted over the front suspension, the car's maximum rebound envelope determining the maximum height for the bodywork in that area.

Audi has produced a thoroughly detailed machine.  This was further witnessed at Le Mans when the Joest Team was able to complete an entire swap of the rear end of the car in just over 4 minutes.  And history has shown us that it rarely is one one "trick" item that differentiates a supremely dominant car from its competitors, it is the subtle details that make the difference, and such is the case with the Audi R8.