I have used iDrive, it was a cinch. I've also been passengered in Autocar's silver M6 long-termer last year, which had been already set-up to extract its best through the M-button. All I'm saying is, not all of us see the M3 as just a 'nice car' that's brilliant. To me, a car is there to be driven hard and my current driving is heavily stacked in favour of hard driving. Therefore, it wouldn't be too difficult for M to do a version without Nav, iDrive and all the M-functions, just have it set to the optimum setting all of the time. That is part of what I've been calling for, a Clubsport package that gives lightweight seats and less creature comforts, GT3 style. If M are so serious about their 'hardcore' image, then their cars should offer that way for the customers who want that.
Word, Porsche's 911 gets around just fine with just one button and two modes... fast and comfy or faster and stiffer