5. Better controls/more control customization options.
Having Wii Motion plus support, with the lack of sensitivity options, seem wasteful. It could have been so much better.
The wii motion plus was 100% pointless in the game. The only reason they included it was so they could put it on the front of the box.
It's not even necessary for an FPS (see Call of Duty series) (yes I know Signal will probably disagree with me on that one lol). The only real benefit I saw was my cursor didn't go wacky when the wife walked in front of the TV because the motion plus still tracked where it was even though the sensor bar didn't .