I've noticed in Arma 3 there is a key to bind handbrake, and I've noticed that it is very useful in some situations. When the back wheels lock up and you do a long sliding skid, But the animations of the locking up of the back wheel and the sound effects is only client side. Now I know this isn't game breaking or even worried about most people, but It would help in say Life missons or even open public missons. In arma 2 alot of people were just getting run over, and not many knew if it was a mistake or not, at least if you heard someone heavy braking and skiding towards you, you have an Idea he was trying to stop before hitting you ? just alittle ider.