I would like to see F3-Mode be disabled for all A/C and vehicles in the MA, but only if there was some sort of replacement for the SA that is lost.
F3-Mode seems natural given that our crews don't really exist, they can't fire on their own and they don't communicate about targets and threats. So tapping F3 and twirling the hatswitch around seems like a simple solution to achieve the abilities of a full, well-trained, and experienced crew.
I think if pictures of the corresponding number key(s) mapped to the different positions throughout the craft appeared at the top of the screen when an enemy icon appears in its cone of fire, F3-Mode could be disabled. The game would be a little more realistic and the game would be more in-depth and dynamic. Some bombers will have blind spots, some will have several positions light up at once, and "Ghost's-eye View" will be gone forever.