Iām guessing that once we plug in an analogue joystick into the Arduino keyboard, it will correctly recognise the input. Either that or an old school arcade track ball haha!! Centipede style. (Boy I would love to mod one of those into my Gameshell!)
For now though, nothing really heavily benefits from an analogue input stick vs a digital dpad, as tempted as I have been to install PSP style analogue slider sticks.