I think it would be really really cool if there could be like mobility kills for vehicles, what I mean is like if you hit a track on a tank or a tire on a car etc it will completely stun the vehicle making it unable to move for a bit until an engineer repairs it or after some time. hitting a landmine will always result in a mobility kill for the vehicle. I also think it would be cool if tanks and other vehicles like them took less damage from the front and more from the back