I'm not sure if this is true, but i've heard that people were able to increase the magnatism of the recticle so its impossible to lose your shot on the guy. You know, like when someone is in your scope it turns red and the sensitivity sticks (for example on 9 sensitivity, all of a sudden when ur spinning ur head slows down when ur looking at someone).
Like i said its just something i heard, im not even sure if it works, and even if it did theres still a 50% chance it wouldnt work over a network/xbc.
Its pointless to keep worrying about this stuff though, cuz once halo 2 is out, Halo 1 is just going to rest in peace in our memories forever.