If gameplay upgrades are already discussed, what is the state of sensor and targeting code?
What I had in mind was a rearward firing missile, a'la Firefox. (Think Russian)
A broadened code could also be used for more intricate turreted weaponry: namely you could slew the turret's FOV around, and fine-tune the point defense of your bomber or manage a gunboat.
In the same vein you could have slewable sensors around and "hunt" for bogies beyond normal sensor range - or hunt for comms messages a'la FarCry / Steel Battalion.
(This could be especially funny in multi, as you could capture the hostile team's transmissions. If the missions had some tactical depth to it, such information could be critical and would force both sides to plan a lot farther ahead, and heavy handed information warfare could ensue.)