The new modifications for the controller's Look Sensitivity and Look Acceleration are awesome. As these modifications are becoming more complex, would it not be cool to have a little test screen where you could modify the settings and then have a cursor you could move around in a small space to try to adjust to the feel of the new settings you have input? Perhaps it could even have random pixels that light up and you could target them with the new settings to get a more realistic action as what would happen in game?
It can be a bit frustrating testing out new combinations of settings in a live game. I am not saying this tool would help you get it right the first time - but certainly would help cut down on the loss of lives and game frustration as you are figuring these things out. If you take your competitive ranking seriously, it does create a bit off added stress when trying out new things.