Another vote for folding key, low washer fluid (dangerous not to have in countries with real winters) and aux in.
Also:
Extra 12V outlets.
One for the rear seats and one in the dash on the drivers outer side.
Possibility to upload POIs like speed cams into the sat-nav.
Pre-out on the HU for attaching amps.
An ethanol powered version.
Make the ashtray and cigarette lighter cost options.
I suppose a "stealth mode" is out of the question?

Or a civinfo flyer in each car when delivered...
But in summary it is already the coolest car you can buy for reasonable money.
4000 civinfo members can´t be wrong.
Just needs a few tweaks.