Thanks for the recommendation. I purchased and played some Moonbase Commander. Improving clarity on AA is needed for sure. Next update I will use more unique sound and vfx for AA shooting a missile down so it doesn't look so much like the missile hitting a target.
AA does have a reload time but it is very short right now. I'll experiment with extending the time, but I think it will also need to go in hand with logic changes to make the firing a little smarter so there are not wasted extra shots once a missile is successfully hit.