Don't think 32-36 mp is necessary. I have a D800E and the NEX-7 produces prints equal to it at 16x20, which is about as big as one can use in gallery competitions. I have a 3800 printer, so the 17x22 print is my max, and honestly, unless you have a special need for larger, most people won't buy anything bigger as they don't have wall space.
The only thing I think is a holdback on Sony is that they don't have a plan to hang really big lenses (those without a foot) on such a small camera. Really Right Stuff doesn't have anything for this application, dunno if others might.