And that's where the problems start. People want to be ably to fly every single bomber type there was, so instead of a highly detailed, historically accurate true simulator that focuses every detail on one type right down to the last switch you end up getting something more and more arcade as you add flyable types.
I'm all for including B-24s and B-25s and Lancasters... But if such planes are included the have to be historically accurate in their operation.
As far as a linear campaign of 25 missions... Why couldn't it be dynamic? There would literally be hundreds of factories, plants, airfields, rail yards, bridges etc to bomb in theory. And with nearly any start year the campaigns would differ a bit each time you played.
I chose 25 missions simply because that's how many a B-17 crew was required to complete (late war was 35).
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