I read now, bombs standard aviation used by the 8th Bomber Command United States, operating from Britain, from 1942, were the so-called GP or General Purpose (General Purpose): AN-M30 100 lbs, AN-M31 300 lbs, AN-500 lbs M43, M44 AN-1000 and AN-M34 lbs 2000 lbs (1 ton).
One bomb 300lbs (150kg) make a crater of 3 meter+-. One crater each 8 meter is posible, each 4 meter ,I don't see it.. (in all 62500 m2/hex). 8 meter/crater=divided between 4 the size of the unit (12-25 aircraft)
The problem is that 'chopping air units' not only affects the oob file, but should be able to add new aerial units created, so they are available in all scenarios. I understand that is a change that involves a lot of work.
But to adequately represent the air factor in the game, you can do this change. More air units, for atack in more different hex, but less aircraft for each attack