My suggestion:
(There will be 2 vans or cars placed in each faction's base (1 in each base), STARS base and UC base. when a player or a opposite faction steals the vehicle and brings it to a certain place you will get ammo and med kits, depending on which one you will steal. for example: you steal the STARS vehicle and bring it to a safe place you will get medkits and pills/anti virus. all 2x. and for when you steal the UC vehicle you will get more fire power as in Ammo 3x for primary and secondary. also when a Check point is on you can bring the vehicle in the CP and everyone that is near it will receive the items. this could bring team work and maybe even a new class to the game.
For the new class (maybe) : Rank 6 : it will be called "Hijacker" if I spelled that correctly. you will need that class to steal the van with a command : /steal. when you typed that cmd near that vehicle in the factions base you will need to wait about 10 seconds and than you hijacked the vehicle. than the gate of a factions base will automatic ly opens and you can drive it to the safe place or CP if its on.
Stars is also able to give away their vans etc.
I believe this adds up the team work in the server and its allot of fun to steal stuff from people haha.