Now that i think about it, how hard can it be to make the saber move as you move your controller? That's all that is needed here i think.
Nearly impossible. The sensors only provide acceleration data. It would be possible to calibrate an initial position and track from there, but the first time you max out the sensors with a fast movement, you'd need to recalibrate.
Actually it's quite possible. The latest release of glovepie (pc drivers for the wiimote) supports 5df via the accelerometers and while it's not 100% accurate, I'd say he got it at around 85-90%. There's also a special mode that "fakes" 6df by reading the sensor bar values as well. It's far more accurate. It has 1 to 1 tracking when the wiimote is pointed at the screen and nearly that (via guestimate based on last known position and accel data) when it's not, so long as you don't turn the wiimote completely backwards.
The thing is, like the others have said, this particular developer sucks and they'll be far too lazy to implement such a complicated function. Heck we'll be lucky if we have a "flail your arms like crazy to do a completely unrelated slash combo" like we got in TP. No More Heroes is far more promising, and imho more interesting story-wise.