How about the easy stuff?: 1) Make the seat belt clips about three inches higher.
2) A steering wheel that actually befits the look of the car and not something taken off my kids pedal car.
3) Easy access drain plugs for oil changes.
4) Do away with the absurd "Rest of World" charge.
5) Put another inch between each pedal and move them over to the left another inch.
6) Make the font on the speedo large enough so you can actually read the numbers..maybe even make it digital!
7) Comprehensive gauges for temp, oil pressure, volts, etc.