Hey nice writeup. I agree with most of your points. Enjoy your new green rep dot
1) Great idea, I think cruise should be a standard feature on all cars
2) & 5) A 6th gear would give you the taller gears you are looking for
3) Rear diffuser would do wonders IMO
4) The current layout is pretty slick 12/16v configuration, I wouldn't change
6) Totally agree with high pressure direct injection, much higher efficiency
7) Also agree, however I would build on it a bit. VW has been working with a Turbo & Supercharger philosophy which is yielding very promising efficiency. With focus on efficiency rather than power I think the Fit could benefit from a higher compression setup. Although then it would not be able to take regular fuel. I cherish my regular gasoline
I think the Fit was built as a reliable economy car, no hybrid technology or complicated parts, just a simple gas engine. I think they have hit the mark. I don't really believe in hybrid cars as battery technology isn't where I think it should be yet.