I was going to add this to the discussion about bomber crews bailing out, but I realized this really needs it's own thread.
How about when a pilot bails out, he can't End Sortie until he reaches the ground, even if someone shoots him before he gets there.
I saw this in another flight game some time ago, and I thought it might an interesting addition to Aces High. You would still have the stats for getting killed, or bailing successfully, etc. But a pilot would have to ride the chute all the way down. This could help add some immersion, and maybe discourage the bomb and bail crowd.