It would not hurt if we could more easily dump excess ammo. Yes some of us do this (.303s, 7mm etc) before taking off.
Simply having check boxes for each ammo type defaulting to Enabled for instance.
Idiocy. Ignorance. Gamey. Those are the three words that describes those people who actually think "dumping" the rear 8mm's in the 110, the .30's in the Mossi, rear 13mm's in the 410, etc, will help them turn tighter, roll better, or actually win a battle easier. Dumb dumb dumb. The benefits of the wee extra firepower outweigh the few ounces of weight gained by "dumping" it. If people actually think being a few lbs lighter is the difference than winning, losing, running away successfully, etc, then they should not have been in that predicament in the first place. AND... instead of dumping ammo, fly around for another 2-3 mins before engaging. Burn the fuel off, dont dump the ammo.
Don't dump the ammo, use it. I've lost count of the number of aircraft that I've given a bloody nose to (oiled engine, PW, etc), and they gave up the fight or broke off their attack long enough for me to get my main guns on them for 2nd, 3rd, or 4th chance to shoot them down.