I think you've got joysticks and controllers mixed up.
Innovation First makes the control system that tells the robot to do stuff. Yes, you have to use it.
Joysticks (and anything else that connects to the operator interface, for that matter) have been functionally wide open. Go wild on that, if you prefer. And if you get an N64 controller to work with it, we want pictures.
(note, however, that everything is subject to change without notice or reason)