What will be the 15 Mustang look like, if you were the design team lead?
If it were me, and I was told by my boss to design a sports car that will be sold globally, I would follow the direction of Corvette Stingray or Dodge Viper:
1) Maintain its distinctive exterior design from the rest of the corporation models. I would not design a Mustang that looks like a Fusion or Fiesta in the front.
2) I would make some revolutionary changes to enhance the aerodynamics of the car. A wedge shaped car isn't bad. This could potentially increase the drag based max speed, MPG, and even 0-60 and 1/4 mile performance.
3) Yes, I would also make the car lighter and smaller, although I will make sure its exterior is more spacious than that of a Miata.
4) I would design a transmission that is as smooth as that of a Miata or S2000.
The Stingray seems to be a big success. A friend told me that a lot of the Chevy dealers are selling Stingrays $5000 to $10000 above MSRP.
2014 Mustang V6 3.7L 6-spd manual, with MGW shifter, Airaid CAI, BBK shorty headers, Corsa Sport axle back, strut tower brace, JLT oil separator, GT500 differential cover, BG Synchro Shift II gear oil, Redline differential oil.