That would seem like the next logical step for the MM, to have a touch-pad like area instead of a ball, but I think the first thing Apple needs to do is make it slightly more ergonomicit should have some sort of indents for the optimal placement of fingers, as it can be difficult at times to utilize right-click if your middle finger is displaced just so from the optimal position; it will read it as a left-click instead. You would also need some sort of tactile response for the scroll-pad that would replace the scroll-ball, like a slight dome-like surface bulge. Next step: make the whole thing out of matte glass over aluminum, to make it consistent with the new uni-body track pads.