Much as ANY game out there with multiple players has an ammo counter, I don't think AH should remove ours.
Any FPS out there tells you how many clips you have, how many rounds left. Any RPG tells you how much health you have, how much mana, how many potions/spells/whatever left. Any decent flight sim out there will have a way of telling you your fuel, engine settings, ammo, temperature (hell, even TargetWare had the debug screen that most folks flew around watching their ammo on).
It's not a compromise in the reality of it... It's a gameplay FEATURE that's invaluable to any player, in any game. We strive for the experience of the action of fighting in WW2, not the monotony... Not sitting around for 2 hours waiting for a raid to prepare, running the engine for 1 hour, heating it up half an hour before, then taking off and waiting 20 minutes before getting airborne because you're last in line of 200 planes taking off.....
Removing the ammo counters would be as stupid as the IL2-phytes that love to pretend "no icons" is realistic. It's a false argument because we're NOT recreating a WW2 sortie where you fire your guns ONCE if you're lucky then run screaming home for help. The majority of all US WW2 pilots never saw the enemy. Keep that in mind.
Ammo counters serve a function, same as the damage screen... same as an accurate fuel gauge (not all had that luxury), to have guns that never jammed or engines that didn't sieze up if you flew inverted more than 10 seconds (I kid you not)....
So if you're on a quest to make things realistic, you have a crapload of things above "remove the ammo counters" before you even consider playing that card.