Nav system as good as modern aftermart units.

Mainstream type audio system.

IPod hook-up that is fully functional, including showing the album artwork and all info on the screen.

Automatic climate control that is....automatic. Or, just analogue dials. "Hotter" or "colder" is just fine.

Back-up camera standard.

No brake dust!

Room provided for big subwoofer(s).

Paddle shifter standard.

I just love real wood steering wheels. Kind of vintage to be sure, but so nice.

I have always liked the idea of a fairly dramatic ride-height system so it could be lowered at speed, or just to look cool.

Of course, all reliability issues would be solved and there would be easy access to all components for easy repairs.

24" extra-tacky wheels. Just kidding.

I would get a new X every year, free, for sharing my astute observations. The BMW corporate gas card would be appreciated, but I won't press the issue.