Increase the number of AA batteries on fields and near towns.
Place Flak Towers (several 88mm's) in prime flight paths
Random AA postions that move on a daily basis.
Increase the AA capabilities of fleets to a more realistic level.
Anyone who has seen footage of AA barrages over Germany in WWII and from US warships in the Pacific theater, knows exactly what I mean.
AA guns should come back on line individually instead of all at once, first gun down will be first gun up.
Then if you want to hedge hop or dive bomb a medium/heavy bomber on a target..........
Now will the presence of all this extra AA/AAA change how the game will be played?
Yes, bombers (hopefully) will be back up at reasonable heights and the strikes will need to be larger, the vulching will involve higher risk (with aa guns coming back on line individually) and allow defensive elements to get up in the air.
Now, I will be putting on the asbestos suit........