1. Hands move to controls being activated in vehicles and aircraft
Hands shouldn't just be on the wheel/flight stick+throttle quadrant, and should also move the switches that control the fuctions as well.
2. Vaper Trail/ "Trace"
Sniper rifle projectiles have a visible vaper trial called trace that real life snipers use to track a bullet to the target
3. sound echo delay from distance
Starting from a few hundred meters out sound of bullet and weapon inpacts start to take longer to reach a person.
4. Ability to fire from a helo wilst holding a marksman rifle or return fire from the helo if coming into or out of a hotzone
5. tank interior and climb in and out animation