You see, I watched that many people wanted to become an Ace of spades tactical game. I propose my idea. My idea was for the next updated. It is added positions, Assault, Support, Engineer. Yes just like in Battlefield 3. I saw the demo of the next Updated on youtube, there was a helicopter engineer for the job then, his would be to repair all vehicles.
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Assault position: It would be to infiltrate the enemy area to plant bombs, destroy bases and vehicles to help get a better attack on the enemy.
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Supports position: It would be to get behind people posted Assault and engineer. If an enemy hurt one of our teammate, you could, in your inventory (shovel, hand grenade, rifle and pack) to your object * using * to give to your enemy to gain strength to become 100% life. Also it would be a heavy machine gun with multiple cartridges to protect all allies near him.
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Engineer position: It would be to repair damaged vehicles and take possesion of enemy vehicles while maintaining a defense with his weapon.
The vehicles have a percentage of life (100%)
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1 shot = 2%
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If vehicles fall to 0%, the vehicle will not be totally destroyed, it would have * died * position on the floor. An engineer could come on the vehicle and try to protect his life not to get shot while it recharges the vehicle's life.
Time to recharge the vehicle of an engineer would be 15% per second.
Then he can take possesion of the vehicle and from the battlefield :)
I do not know if this could give you ideas but please, put a comment and tell your opinion of my idea.