If we're talking realism, how many bomber pilots were known for their gunnery skills? The lack of Otto (automated defensive gunnery) in AH puts a ridiculously heavy workload on bomber pilots, especially when on final approach to target. How many times do you think the bomb-aimer had to leave their post when seconds from drop to man a gun?
As a bomber specialist, I want to fly the durned plane first and foremost - handling the bomb-aiming is interesting, but HAVING to handle gunnery as well just hands the advantage to the fighter pilots. It's beyonfd belief that in a plane with 5-7 crew members that the only one who'd spot approaching enemy would be the pilot. Even having Otto just call out that they can see incoming enemy (the o'clock plus high, low or level) would be a help even if Otto didn't actually fire a shot. Best of all would be that, PLUS rather inaccurate Otto that could be turned on or off by the pilot, and retaining the ability for the pilot to jump to a gun position and have a go if they wish to.
Note that Otto gunnery would be using up ammo, so there'd be a tradeoff between an occasional lucky hit from Otto against ammo depletion. It'd also mean that we wouldn't have to use some of the crazy and unrealistic flying tricks that are commonly necessary in order to survive bomber sorties in the MA, and might also encourage more folk who aren't great shots to have a go flying bombers.
Dotdar should also be visible only to those on the ground, IMO. This would force fighter types to fly defensive patrols a bit more, and make it harder for them to home in on buffs so quickly.
Also, low-level flak needs to have a wake-up time, and be less good at tracking objects with high angular velocity. At high alt, it seems to be about right, but at low level, it's so murderous that the kind of low-level raids commonly flown by Do17's in the early war are a darned sight more dangerous than they should be.
Next - all this precision-bombing nonsense to close fields - it'd be very welcome indeed if dropping bombs on fields produced cratering that could effectively prevent planes from taking off. Perhaps a bulldozer could be added to the vehicles that, if driven slowly enough over a crater would smooth it out. Have this in addition to allowing the pinpoint stuff, sure, but scattering bombs on the runway should have SOME effect other than occasionally catching an unfortunate spawning plane.
I'd prefer the Me163 to be removed from arena play altogether, as it just allows fighter pilots to be damned lazy, and pandering to the "I wanna kill something quickly" attitude overmuch has been the worst feature of all the WW2 combat flight sims I've seen.
Off on a tangent - howsabout awarding perkies to recce planes for photoing enemy ships, bases and strats and RTBing? You'd need to have a recce loadout for suitable planes, of course.