Probably most people, when you mention American motorcycles, think of Harley-Davidson or perhaps Victory and Indian (both owned by Polaris) as the only domestic manufacturers of motorcycles. Sure there are the custom builders popularized by the chopper craze over the last decade or so, such as Orange County Choppers and West Coast Choppers, and we'll toss the now defunct Big Dog in with that pile.
But if I ask you to name American sport bike builders, who comes to mind? No one major since the demise of H-D backed Buell, I'm sure. There are a couple of electric manufacturers, Motoczysz, Zero, and the like. Then there are just a handful of dino powered bikes, most of which are way beyond what I could afford, Roehr, Motus, Erik Buell Racing, and one that I can afford (and would love to have), Fischer.
I'm sure I'm leaving some out, but it looks like there is still room for anyone who wants to build a sporty, smaller displacement, motorcycle. So, if I were to ask what features a small displacement sport-tourer should have, what would you want?