The Honda HSC (High-performance Sports Concept) was initially shown to the public at the 2003 Tokyo Auto Show and although Honda never confirmed it, most thought that the HSC was going to be the next generation NSX.The 2003 HSC featured a light weight, mid-mounted aluminum 3.5L V6 i-Vtec engine, with a 6 speed transmission controlled by either an F1 style paddle shifter on the steering wheel, or a unique dial shifter on the center console. When shifted into reverse, the navigation system's adjustable flat-panel screen in the center console becomes a display for a rear mounted camera. Abundant leather and aluminum trim pieces round out the interior, an all aluminum frame with Carbon Fibre body panels keep it light, and scissor style doors affirm its Super Car status.
I think that the back end of this concept would be a nice touch onto what Honda is proposing to be the next NSX, it stays closer to the actual NSX roots in my opinion.
Here's a link to the Honda HSC design page from Honda;
http://world.honda.com/collection-hall/globaldesign/hsc.html