I want a higher MP sensor for several reasons, one of them being the headroom it provides for a crop.
More pixels??
My Nikon D4s has "only" an 16,2MP sensor while its sensor is many, many times bigger.
I like to have better pixels even a little bit less instead of more. In a 1/2.3 sensor more pixels means lesser quality.
Oké, more pixels means further cropping but with high quality pixels as found in the D4s you can do much more deeper quality editing.