They will never be as cool as the original. Too many Federal safety regulations will hamstring it: Stability control is mandatory on 2012, doubtful the top will be removable, ABS, airbags......
As well as the buying public will insist on such ridiculous amenities as: climate control, carpet, power windows, power locks, navigation, 8 way adjustable power seats, automatic trans.......
It would be nice to have a stripper version available similar to the club racer SVO Mustangs. I'd buy one without all the heavy/ pricey options. Unfortunately I am not the target audience Ford (or anyone else) is looking for.