I think this is a really good idea. No idea whether it's as accurate as a keyboard/mouse, but it really should be, if not more accurate, for it to make sense.
Using a keyboard and mouse to move is a bit silly, since these devices were never designed for gaming. Although it works very well, it would make a lot of sense to consolidate them into one, ergonomic, handheld device.
I find that mice suck for gaming unless you get the best high-precision mouse with a good mouse pad, and that just becomes expensive and you're still using a keyboard and mouse. Might as well spend that money on a controller designed for gaming in the first place.
Using a keyboard and mouse to move is a bit silly, since these devices were never designed for gaming. Although it works very well, it would make a lot of sense to consolidate them into one, ergonomic, handheld device.
I find that mice suck for gaming unless you get the best high-precision mouse with a good mouse pad, and that just becomes expensive and you're still using a keyboard and mouse. Might as well spend that money on a controller designed for gaming in the first place.