WM+ could finally let you shoot off screen which is something I've been wanting for a long time now! seriously, as requiem I wrote about that all the time
For instance, I've always wanted to be able to blindly shoot behind me or even shoot off to the side while I drive a vehicle.
And what about the possibility of two WM+ wiimotes? You guys are really small minded if you can't think of anything WM+ could help with in the FPS genre.