The user interface of GRD has been one of the best in industry so you will probably hate me for this. I'ts the first part of the design concept for a aperture priority GRD V. It's influenced by the design of GR film cameras and also the by fact that many of GRD users are shooting mostly either on full manual or aperture priority mode. For me the scenes dial is unnecessary so I replaced it with the aperture dial like used in analog GR models. I could have add the "A" mode (ala Leica X) but I didn't because I hate it. So its a personal statement.
To set the time for exposure you have to use the dial on back of the camera. You can choose it longer or shorter or just push it for auto value. If camera is switched on it will set an auto value from the first reading so you are ready to shoot right away. ISO values are accessed trough the front dial and will be remembered.
Edit: for Auto ISO session you can switch the functionality of front and back dials. And erase the memory of ISO dial after every switch-off.
Edit: added a dedicated button for video recordings.
Edit: added magnetic lens converter (fisheye?)