the one thing i would definatly change is the BOSE setup. Or at least give the people who buy the "pack" version with leather etc the choice not to take it, or either replace it by someting decent. And ditch the cassette player
oh and
IPOD INTEGRATION! (or mp3-cd support at least)
and a Nismo exhaust should be standard
Bigger wheels in the Nissan options list (rays, but 19" and wider)
Get an integrated antenna in the rear window, like on my TT, so we dont have this "remote controlled car" look anymore.
Some weight saving would be nice too, but imho the above is more important.