Bring back CF cards I say! Where more of the data processing burden was implemented by the card itself.
Other than that, most of our (non software fixable) gripes are due mainly to the physical size / layout of the machine, & I can't see SD spending $$$$$$ re-tooling the case. It would make it a different animal
So recessed gain knobs are out, as are a better placed encoder knob, Hirose input, etc. But then I love that fact that the machine is so tiny. I guess you can't have it all ways.
Doubtless there will now be great intrigue and much speculation over the coming months as to what exactly the -II suffix implies...