While AA in both divisions and at the state level is a solid investment in many cases, I am not sure a "no air" Soviet build is worthwhile in the current build.
Others have noted a bunch of issues, but let me break it down my way.
1) AA guns are cheaper than planes in both cost and resources. You can easily spam both support AA and line AA in your divisions just using steel. You can produce AA guns from day 1, and even though Tier 1 AA guns aren't as good as the Tier 2 guns you can get in 1939-1940, they are still solid.,
2) State AA is more expensive than just spamming AA guns for divisions, but you really need it to deter LOG strikes and strategic bombing. Note that strategic bombing isn't just about factories, but STRs can bomb forts, railways, infrastructure, and other state level stuff. Once built, state level AA is permanent. It can be bombed, but it will repair itself over time like all other buildings even with...
Read more