A small suggestion: maybe you can allow change bullet type after launch [canHotSwap = true] especially for larger caliber guns (e.g. MBTs should be able to change shell type); and istead of using ("Light" "Medium" "Heavy" "Very Heavy"), maybe you can use (e.g. "7.62mmAmmo" "12.7mmAmmo" "76mmAmmo" "85mmAmmo" "100mmAmmo" "125mmAmmo" "152mmAmmo"...); and finally, it would be nice if turret with smoke launchers can fire smokes and mordern turrets have a targeting sight (same as targeting camera from BDA).
And some addition turrets suggestion: BMP-1, BMP-2, T-62, T-72, T-80, Object 292, BMPT; Gepard, Leopard 2A7, PUMA; ZTZ-88, ZTZ-96, ZTQ-15. Reloadable missile turret (e.g. 9K35 Strela 10, ADATS, IT-1, Object 775...)
P.S. is there any mod that have the tanks' hull?