The front looks good, the back needs work.
But the mustang has always been and must be a large volume money maker for Ford. It must sell very high numbers in the US to make sense. For that to happen it must be relatively cheap.Simple economics.
Combine low cost and the FACT that the target audience demands a solid rear axle and that determines the final product.
But at 30K for a Bullitt 315hp version and 40+ for a 500 hp shelby version with HID lights and a decent stereo. it is tough to justify your statement. What technology are you missing given the price? Don't tell me electronic nannys, because Mustang is built to burn rubber and fishtail around corners.
http://www.fordvehicles.com/cars/mustang/models/#
I think the mustang, as always delivers great value. World beating value.