I've found only one serious defeciency with the Nex-7 and that is the ability to control the minimum shutter speed in Aperture Priority. With the advent of ASA control, or Auto ASA the camera will adjust, on the fly, what is needed for a proper exposure. As ASA is on the fly, and Aperture is controlled by the user, that also leaves the shutter speed to be automatically controlled. But with digital sensors being oh-so sensitive and dense with pixels - shutter speed needs to be at least 1.5 times that of the focal lenghth. So what does that mean -- well if I'm shooting at 50mm, then my shutter speed needs to be at least 1/80th of a second. And with the current Nex-7 firmware shutter minimums cannot be set.
Taken at FFKR Architects - Roger Jackson and Steve Goodwin in discussion - March 2012