U.S. wont be getting V-Strom, TDM, new HawkGT or anything else besides Cruiser, tourer and sports bike anytime soon, because in this country motorcycle is basically a hobby, roads are wide and straight and there are plenty of parking spot for cars in the most of the country. And there are only 3 kinds of motorcyclist; Cruiser, tourer and sports bike.
In order for the big 4 to bring "something else" they would need to produce & import in mass quantity like the rest of the models to keep the price down but since the sales forecast will most likely be low the price for these "something else" models would be little high.
Then,
Cruiser guys who only ride few blocks (the most ignorant people but the biggest market) would say; "wheres the chrome", "it aint low & long"
Tourer guys, who are the most picky people would say; "wheres the fairing, or its too small", "wheres the hard bags, shaft drive, heat grip, ABS and etc
", "motors too buzzy, too small", "need something comfortable for 1000 mile a day ride"
Sports bike guys who are the most simple minded people would say; "too expensive, rather buy SV or CBR", "not fast enough", "more power!"
The big 4 says, "screw you guys, Im going home" (Eric Cartman / South Park). Theyre going to sell these somewhere else!