I'd second the HUD.
~Auto Folding Mirrors should be standard...not just in Prem. Package.
~Compass in mirror (not sure why, but I love that thing)
~Has been discussed ad nauseum, but I think BMW should offer Brembo Brakes with the M's, or at least have an option for an upgrade
"You will get there, but it is up to you and you alone. It is what you are willing to do, and how you are willing to get there. You must be relentless, you must be tireless, you must pursue at all costs, so that you are ready, when the time is right." -Dad