They should make it so that you cannot attack your fellow squad members. It would make it so much easier to fight in large groups of people, so you don't always have to look for a nametag or skin, you can just start swinging. It also helps when your teammates are chasing someone down and they hide near you or behind you and your teammate accidentally kills you. It's very easy to install, and I know it isn't much, but it would still be quite useful.