The buttons would be closer to your right thumb, moving the same thumb to the right feels awkward for the AF-L and Q compared to moving to the left, especially the AF-L, Q. Either squeezing you thumb towards your palm or pivoting your hand upward. And then there's a bit of stretch if you are holding the camera to your eye and reaching for the view mode.
But I do agree depending on the size of your hands, particularly larger hands, the more difficult it gets to access features when not spaced accordingly.
For concept B, the joystick would control the menu within the viewfinder. Similar to when we press the MENU/OK. The joystick would be fully customizable to user preference. And when not looking through the viewfinder, the lcd would display the same menu.