Just the one weapon type you don't like. If you nerf snipers fusions will be op if you nerf fusions shotguns will be op if you nerf shotguns sidearms when you nerf them all snipers will be op again and the cycle will start over. It's pretty hard to quick scope but some people put a tiny dot at the center of their screen and put that little dot on your head before they quickly zoom in and squeeze. It's cheap but effective. It is also how a lot of people no scope. Aim assist doesn't guide your reticle to someone's body. It just makes it stick for the blink of an eye. If you want to see what it is like to play without AA go with a friend into patrol and try shooting each other.