Spidermate said:
A trackball wouldn't work since it can't reset itself like an analogue stick can - taking twice the moment to manipulate your character.
I am not sure I follow you here.
There is no need to reset itself--it just just like a mouse (less stationary). Joysticks need to reset themselves because they have an "accumulated" control affect based on the degrees away for a 0-point, whereas a mouse/trackball has no 0-point and moves linearly in relation to the movement of the input device.
There is no need to "reset" itself. The operate on a different principle.
If you watch the videos that the company showed it demonstrated why TBs are nice--smooth, percise aim. You move the ball an inch your player moves and inch--and stops. Whereas with a controller if you move and inch and stay there you keep moving forever.
There are advantages and disadvantages, but in FPS (which I play a lot of and do quite well) I can say a TB has as good, if not better, feel than a mouse. I would take a mouse or TB over a joystick for a FPS any day (one of the intended uses of this device).