What late model accessories do you wish your old car had?
Surprised no one has mentioned a modern feeling chassis. That and a modern transmissions are a huge part of how a new car feels (in my opinion).
After those, brakes, steering, cruise, AC, in that order.
Someplace in there is EFI.
Modern seats that support you and keep you located are a must.
Power windows would be pretty nice, if only so I don't have to reach over and roll the passenger window down at 65 mph when the temp drops and I don't want the wind anymore. Or if I want to talk to someone on the passenger side of the car.
Like to have power locks so I don't have to check both doors when I walk away, but not that big of a deal.
Lastly would be a radio of some type with an iPod hookup or that can read an SD card. Love to have a car I can take on a long road trip and always nice to cruise with some tunes. I don't want XM radio or have to depend on getting radio stations along the way.
ABS/traction control would be cool, but can't see that being something I would ever get to work like I would want.