Voted no.
Is an "M" a sports car or luxury car... thats the question, quickly followed by "define a sports car?"
You could argue both sides... Yes an M car is top of the range but should a "true" sports car be weighed down by heavy optional extras????
Not having wouldn't put me off buying a good, straight M car. It didn't put me off buying a 3 year old Z4 coupe. (ok its not an M )
(Probably get roasted for saying this, but surely by adding SAT NAV and other optional extras, then BMW's claim of having "perfect 50/50 weight distribution" must be rubbish!

)
IMO there are too many extras in cars that take the driver's eyes off the road and have an impact on road safety as it stands.
It's also now the norm for maufacturers to produce sports models that are
stripped of any extras to reduce weight.... they still have the brass neck to charge more for these as well!!!
TBH I've never had SAT NAV and don't need it on my 5 mile commute to work. If I'm venturing further and don't know the route, I use a map beforehand to plan the route. I also find that reading road signs en-route does the job!
(If I did get lost I could always turn on my blackberry GPS and see where I am! )