So here is my line of thought on the ASF situation (on Seton's obviously but this should transpose)
On most Seton's game from minute 15 at the latest to the end of the game, massive stack of ASFs will be formed by the two team. This causes lag. Lag is bad.
So why do people build ASFs?
To get air supremacy at least over their landmass and hopefully over the ocean. Why get air supremacy? To be able to inflict damage using T3 bomber/gunship/torpedo bomber and to be able to prevent such damage.
So, in my opinion, if you want to reduce the number of ASF you have to tinker with the ultimate motive that justify their uses (air supremacy).
I don't want to change anything with the way T3 air works, in my opinion it is expensive and rightfully so because it is effective. but the only counters to it are ASFs and T3 Sams. and here is the problem.
I would change the way T2 flak works. T2 flack projectiles usualy dont connect with T3 air, at least not with the first plane that flies over it, simply because T2 flak projectile are too slow. So the first change I propose is to increase the projectile speed of T2 flak so that it hits T3 air reliably.
How will this affect the rest of the game?
T1 air : already crushed by T2 flak, but T2 flak will become more dangerous over a larger radius.
T2 air : Gunship will get obliterated the way they always have been. Fighter bomber/Swiftwinds/torp will become mutch more vulnerable but they are already pretty screwed agains T2 flak and T1 AA is still effective in number agains them.
T3 air : Hand full of T2 flak should be able to defend against single T3 bomber and T3 torp the same way a hand full of T2 PD repel single brick or pericival. In large numbers unless they are tightly packed, T3 bomber will have the same number of casualties (planes in front of the formation will die insead of the last)
So, on land, everybody is fine, now on the high seas :
Aeon and Sera have T2 floating flak so they will be fine.
UEF : they have shield and pretty good cruisers so they will be ok.
Cybran : they are ****.
Fixing the machines :
On T2, exept buffing the cybran cruisers, I don't see any solution, but I don't want to mess with it.
My favorite option is to make the cybran's SCU nanite missile able to be launched from underwater.
I have actually never seen it in action, but to be effective, it should have the same weapon stats as 2 T3 Sams (same projectile speed, same AOE, double DPS).
So here are my two cents on this ASF shananigan.