Morwynd said:
A trackball on the right side instead of a second joystick. Am I crazy?
Yes.
Well thanks for the honesty.
Seriously though, why not a trackball?
Specifically, for FPS games.
An analog stick is great for movement, but lousy for aiming.
A trackball, while it certainly would take some getting used to, can replace the mouse for fast precision aiming. Many hard core FPS players swear by them in fact, as superior to mice.
I think people who seriously use trackballs don't use tiny ones that'd have to be maybe half the diameter of a mouse ball. I don't really see how that'd allow you to move anything more efficiently than some other analog interface, and even the smallest kind useable would take up quite a bit of room just by being spherical.
Besides, people are complaining that analog is too domain specific, even though they're used for lots of 3D games. What you're describing only sounds good for FPS, and aside from Doom and Quake series there's not a ton of potential for FPSes on this thing.