There should be a selection that would allow us to customize weapons and vehicles, such as a weapons with iron sight could be equipped with holographic sights,laser targeters and Jacketed lead bullets which would have higher velocity and accuracy and would be used for snipers.
For vehicles such as humvee and buggy would have a TOW and Hellfire missile modification which would be used instead of its own machine gun.For tanks an anti missile defense system which would have a certain ammo and reload time not to give the tank an advantage,HE shells against infantry, HEAT against vehicles,an AT missile launcher against air or ground one type of shell or modification could be used at a time.For MLRS missiles with nerve agents which would have an AOE effect and would be good against infantry's. APC's would have AT missiles or Mortars. Mammoth and Stealth tank would have missile and shells alike.