The First issue is…
(Theres not a single tech tree BR IV plane for the soviets)
Proposed Fix:
Move I-185 M-82 from BR V to BR IV
(Its also silly you currently have to unlock the superior La-7 first before being able to research the inferior I-185 M-82 which is only 3.7-4.0BR worthy in War Thunder, it has no business at BR V)
To Replace the lack of a BR V fighter with bigger bombs etc… 2x 250kg
Add the I-185 M-71 which actually has a BR V worthy performance, packing a much better, 2000 horsepower engine and of course it can still carry 2x 250kg bombs. Performance wise it can rival La-7 but also deliver the much needed upgraded payload compared to La-7’s 2x 100kg bombs.
Last Issue
Planes without any ordinance such as Yak-3, incapable of CAS shouldnt be in Enlisted.
Replace Yak-3 at BR III with Yak-9B which has internal Bombay behind the pilot capable of carrying 4x 100kg of bombs. I can ignore Yak-9T/K due to their tank busting potential and the fact that 37mm and 45mm can be useful against infantry too, but Yak-3 with 12.7’s and 1x 20mm… JUST NO…