First suggestion: A way to be able to lock the turret in place so that the camera doesnt try to auto-adjust so it makes it harder to drive around (could be like “Press ‘Q’ to lock turret in place.”).
Second suggestion: Different types of ammunition for MBT’s (the Abrams, Leopard, T66T2 and WDZ).
Different types of ammunition can be:
APFSDS (Armor Piercing Fin Stabilized Discarding Sabot [or Darts]).
Deals more damage in a more focused area
HE (or High Explosive).
Deals damage in a wider area
Press '1' or '2' to switch different types.