The children in the design department at Canon do stupid things and this time they did exactly what I feared... they removed the zoom +/- from the right side just like they did in the 5D II... HOW STUPID IS THAT? Having to reach to the other side of the camera to review a picture is pure stupidity when you use the big lenses like 500mm f4 etc. I hope the lever by the joystick is going to do just that.
The question is ... why remove something useful that did not imply extra buttons etc? They should let you chose any function for any button and that would solve the problem in a way.
The other improvement I hope for is the AUTO ISO function with ISO bracketing plus the multiple exposures.
And by the way... a grip with a joystick ... is that too much to ask?
Take a deep breath and relax!!! . I just set the "Set" button to 100% mag, and voila, everything is done with the right hand