It would be nice if a single two-handed controller or even some type of two element controller (ala. wii) could somehow approach the accuracy of a mouse and a k

It would be nice if a single two-handed controller or even some type of two element controller (ala. wii) could somehow approach the accuracy of a mouse and a keyboard. This clearly does not appear to be at the same accuracy and speed level as the combination of a mouse and keyboard. There may be a console controller that can approach, equal or exceed the speed and accuracy of a mouse and keyboard, but this doesn't seem to be it. Addition: I suspect that every steambox will have USB ports available for whatever controller, keyboard and mouse floats your boat.