The first thing to be changed is to remove the mode dial and replace it with an e-dial for aperture control on the that side of the camera. Since the camera no longer has a mode dial, change the e-dials to clickable e-dials like on the wheel on a mouse. The idea will be each setting; ISO, shutter speed, and aperture, can be set to auto mode, and out of auto mode, by clicking on the representative e-dial. By setting an individual setting to auto you can have TAv, mode. By setting two settings to auto, you get Av, Tv, and Sv, modes. All three set to auto would give you Green mode. Hyper manual mode would be expanded, as you can click on and then off each auto mode to have either shutter speed, aperture, or ISO shifted accordingly to the other two settings. You will need a dedicated video button, and an option to set P mode to the raw button, or just as a menu option in the shooting menu.
You can lose the Green button as when the EV compensation button is pressed, you will still set it with the rear dial, or zero it out by clicking the e-dial. This will give you room for the needed video record button.
The rear e-dial on the right, will also be like a modern mouse wheel in that it will rotate, have center click, and have up and down selections (horizontal scroll on the mouse wheel). This will be used for all menu navigation. The pad probably can then be replaced with just dedicated buttons