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.