There is an imbalance in unit pool capacity (checked for Red only so far). It means that with current level of money income Red army will reach maximum strength even before the middle game (before turn 40 out of 86).
Let's calculate APPROXIMATELY total possible game income for Red.
Starting (80), per turn (30 per turn x 86 turns = 2580), Gold train (300),
Requisitions (about 105 money per requisition, 6 at once, every 4 turns), so about 630 every 4 turns, total possible 86/4 = 21 requisition, total income from requisitions 13230.
We didn't printed money at all to prevent inflation in this calculation.
Grand total income 16190.
Now let's calculate unit cost for all available brigade types. I'll exclude Militia, ships, supplies, engineers, comissars and all artillery except heavy, siege and battery from calculation.
Below is table for brigade types (I - infantry, C - Cavalry, A - Artillery, t - tachankas M - Money, N - Number available)
I 2I 4IA 4ICA 5ICA 5IA 3IA 3ICA 2I 3I C 4CA Car A A C
M 4 13 23 28 32 27 19 24 8 12 5 27 10 20 15 6
N 74 5 26 (4) 20 10 18(2) 20 20 30 19(1) 9(1) 4 20 10 30 8
When Tcheka available
I 2I 3IA
M 5 2 12
N 50 30 20
When Proletary on Horse (Cavalry brigades) available
4CAT 3CAT
M 46 38
N 10 12
When later conscripts available (somewhere after turn 40?)
I 4IA 4ICA 5ICA 5IA 3ICA
M 4 24 30 34 28 26
N 80 15 10 10 10 10
Batteries and tachankas
4A t
M 44 4
N 15 60
If calculate total army cost (MxN) = 8618
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So conclusion: The army pool for Red is 2 times smaller than they can potentially earn, that severely limits growth of Red army.
When Reds played carefully, not agressively - they will Max their army(all essentlal brigades built) before turn 40.
The consecuence is that Whites can OVERPRODUCE reds, because Cap of Red pool is set too low - it is not historical.
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I suggest to increase Max number of brigades available from the beginning by 30-50%. That will allow Red army to grow consistently without hitting the Cap in the middle game.