Steve has stated that he will never code the bounce combat optional rule. This is a rule I like very much; it shows why Stukas tended to disappear late in the war, so I was disappointed when I learned this.
I just realized that if players want, they can implement bounce combat by hand. Simply do the air-to-air combat by hand, outside the game, and then, when just set up the order of the air units and the combat results so as to produce that outcome in the game.
Put all units that suffered adverse combat results in the front of their queues, do the bombers first, then the fighters.
Yes, this is more work for the player, but not that much more. So if you really want bounce combat, you can have it.
I thought I knew how to play this game....