I would like to see zoom control buttons where my middle and ring fingers grip the right side of the camera body (under the shutter button, on the front of the camera body) This would require an external, small mountable motor that could be attached to any lens.
I also think it would be cool if the onboard flash had a function where you could keep it on, to use as a video light.
And, finally, but most importantly, I'd like to see a detachable LCD screen... one that is wireless would be ideal, but to save cost, I envision one that would be tethered to the camera body with a spring loaded retractable video cable. (a video loop through for other monitors would be excellent on this screen, too)