Better and revamped weaponry for the vehicles

e.g:

ATGMs for helicopters and especially for the transport
Smokes for tank and apc
Visible rockets on the rocket pods of the attack helicopter and missing rockets whenever rockets are fired
Diffrent ammo types for bigger calibre guns (e.g: HEAT, APFSDS, HE etc.)
Stabilizer for the gunner on the attack helicopter
Fiber-optic missiles for the apc
Laser-warning system for the apc and tank if ATGMs get added
Rangefinder for the tank and apc
Balanced damage when it comes to ground vehicles (e.g: the 20mm on the anti-air tank doing little damage to vehicles and infantry, or the 7.62mm on the apc doing almost the same damage as the 20mm)
More realism when is comes to destruction, damage and vehicles.