The IR pointer of the original wiimote is already competitive with a mouse. I can't think of a better pointing device to operate from a couch. It's not as stable as a mouse because it doesn't sit on a desk, but a mouse doesn't track orientation like the IR camera does.
The gyroscope of WM+ does do a pretty good job of tracking fine changes in orientation, but its susceptibility to getting lost prevents it from really being an effective pointing technology on its own. It can be used to slightly enhance IR pointing, but I think the improvement in gesture recognition and fidelity is far more relevant.
"The worst part about these reviews is they are [subjective]--and their scores often depend on how drunk you got the media at a Street Fighter event." — Mona Hamilton, Capcom Senior VP of Marketing
*Image indefinitely borrowed from BrainBoxLtd without his consent.
