The biggest problem is not the controller itself but the expectation that people that use this will be able to compete at all with those using a keyboard & mous

The biggest problem is not the controller itself but the expectation that people that use this will be able to compete at all with those using a keyboard & mouse. The only reason FPS games currently work on consoles is because everyone is essentially equally handicapped. Even a casual player using a mouse dominates versus game pads.