I refer of course to the way the FP camera is turned, in both the Metroid movie and Reed Steel, not like with a mouse where, when you run out of space for the mouse, you simply pick it up and put it down in a better position.
In the RS demonstration and Metroid movie, the cross-hair is independent of the camera when moving inside de screens borders and just pushes it when it reaches them, just like a mouse driven RTS.
That is the wrong way to do it!
Merge cross-hair and camera movement like a PC FPS, and when you reach the border of the screen, just push a (preferably the A) button to "stop" the motion tracking, and move the wiimote into the screen area again.
This will of course lose the direct connection between where you are pointing the controller and the cross-hairs position, but that's a small price to pay for a far far superior way of controlling.
And people got use the exact same thing when using a mouse, so why shouldn't they be able to do it again?