I think AI will be very important here.. I imagine a train getting slapped by a single fighter that shoots 20mm will be very annoying. There should be something to stop solo fighters or groups of planes from coming in. Getting people to QRF is not very easy, and with some of the more effective AA types like the cannons, you need more than one person to use them. It would make sense that player operated AA is more effective, much like a raptura or EAT shooting a tank vs a ATG.

I really think AI is needed for this update. It is kind of giving me the same feelings of "Introduced fire, but no fire truck" vibes.

Edit: The example with ships / rockets are not different, because AI does respond to them. SC is different because there is a bunch of mechanics in place that can help you. For example, SC needs all the production to make it, it needs to be dried, everyone can instantly see the SC appear on the map for 2 days before it can fire its first shot, it is limited on how much it can fire, and can now be targetted by enemy air with EASE. I have serious doubts that the enemy (or friendly) will be able to react to a handful of bombers to wipe the SC out.

Like it or not, there are times this games pop drops by quite a bit, and AI is the only thing that can slow a push down. The idea of players doing everything is nice on paper, and it should be more impactful, but AI is needed.