The way I see it, the Mustang is an iconic American muscle car. Ford should just make a different car for the global market, like the fusion or focus who do have a long history. And anyways, the globe loves the classic mustang muscle car.
Blue, you are right, the Mustang is a great American icon and should always stay true to its roots. However, just like everything else, times change and as this happens, the car needs to evolve. Personally, I am holding judgement until a full reveal is made, but so far, I like what I see.