Type of improvement: Gameplay.
Explanation: Give us the option to let the pilot change his mind when jumping out of his plane and get back in after you choose to bail out (I know, it sounds funny). Off course, not when you're already actually out of your plane . But, when you accidentally press the bail out shortcut and you didn't really want to bail out, you should have the option to change your mind and stay in your plane. There is after all some time between when you press the key and the moment that your pilot is actually getting out of the plane.
Benefits: Realism, ease of use, less frustration when accidentally pressing the wrong button.
Have a nice day.