Below are some of the things I would like to see be in the game or changed. My apology if some have already been mentioned, if so, no harm on bringing it up again even if none end up being in the game.
More realistic (or added) destruction of planes: Examples below
Plane(s) breaks apart as it is falling due to Negative Gs
Engines falling off plane completely if shot severely
Wing shot off plane goes into violent spiral; more sever then as is now.
Maybe even have pilot falling out on fire, or “body parts”
Landing Craft Ships for Tanks during CV attacks
Double barreled 37MM FGs
Some sort of Anti-Tank Mine
Gun emplacement among landing beaches
Film wise: Red trails for enemy, green for friendly
Pony model upgraded