Although we probably won't see hundreds of planes in the air at the same time on a mid-range machine we can still create missions with triggers. Let's say a formation of 30-40 bombers approaches, your squadron shoots down about 50% of them -such kill rates were rather uncommon though- the loss of a certain amount of planes then triggers a second wave of bombers which you are vectored to by ground control. Now, I don't know if this will be possible but if that's the case then we might no be able to have huge single formations but several "smaller" ones in portions. That happened quite often, the luftwaffe sent out several "smaller" bomber formations against different targets to screw up the RAF fighter command as much as possible. Also they sent formations in delay so one came in first and maybe 20-30 mins after that a new one would come in so that the RAF fighters wouldn't have enough time to land and refuel/arm. Super large formations weren't as common as many would like to believe. Personally I don't care so much for hundreds of planes in the air at the same time, sure it looks fantastic but I wouldn't be able to shoot down more than a couple anyway