I suggested a shoulder cut out in another post long ago so I'm all up for it Brook. I think that the ARRI 235 is the closest in streamline but LT would do.
I also suggested that you should somehow designed the battery's and the cradle section, as the mags of the 235 or LT so you continue that streamlined ergonomics.
It's important that the control LCD is not in the back. It doesn't work if you want to make this kind of design. It needs to be on the side.
They're talking wifi control so maybe a clip on module that can be on either side? As an option for the AC?
(PS make it hotswap as well)