I am a longtime Halo fanboy, but I do play other first person shooters(i.e. Cod, Battlefield) often all in the same night. Switching back and forth to play with this or that friend can get tiresome when I have to get used to a completely different aiming system every time. This, I believe, is mainly due to the different aim acceleration in each game. CoD having the least, if any, and Halo having by far the most. I play on 7 sensitivity no problem on mw3 but can barely control 5 in Reach. I purpose a toggle or adjustable aim acceleration setting for Halo 4. As with your sensitivity now, you would be able to adjust it to fit your needs. You could have a default setting just as now, just allow those who would want to change it the option.
I can’t be the only who has noticed/wants this. Please 343 put this option in H4.