You can select 4:3, but it adds blackbars and renders the game in a 16:9 resolution. You can do 16:9 but that only merely stretches the screen. Would hacking potentially allow 4:3 forced resolution for Wii U? You might be thinking "why would you want that?" and my answer to that is CRT usage. Why would I want to use a CRT for Wii U games? Because it's the best picture quality and input lag you can get when you are a hobo on the streets.