I let one game run in observer mode until mid 1943 just watching the AI and was also slightly disappointed. Just a few issues I've seen:
- Soviets can barely build any industry, they don't enough Civs and whatever they had they all put into building railroads when the war started
- Soviets didn't invade Poland as they did historically. Disappointing considering the DLC is focussed on Soviets and Poland...
- Soviets only started invading Finland in mid 1940s, not in Nov 1939 as they did historically
- baltic states get annexed via decisions which cost 70pp, which is to much for the AI to handle, as they kept on spending it on other minor stuff, Soviets also declared war on Latvia in my game, since the AIs starts fabricating wargoals on Baltic anyway, despite already having those decisions
- Baltic states have a staggering 20-30 factories each (!). Estonia doesn't even have 2 million inhabitants in game, why Paradox?
- Soviets didn't build railway artillery or trains thanks to lack of factories, Germany had railway artillery which was present on the Eastern Front but didn't fire because it was assigned to an African army that it obviously can't reach by rail, so it just idled
- Iran gets randomly puppeted through Soviet Focus. Not historical, it should be occupied by Soviet Union + Britain
Outside of Soviet Union:
- Germany still attacks BeNeLux in 1939, completely ignoring the historical timeline, also launches Weserübung simultaneously. Sad this is still not fixed
- Japan still overruns China even with the new supply system
- Spanish Civil War lasted like 3 months before Nationalists won
Paradox has to move away from AI railroading through wargoals gained by National Foci, they should receive wargoals through political decisions. The decisions to annex Baltic states, demanding FInland and Bessarabia should all not cost political power, since the AI can't handle it.
Generally political power is a terrible system and it causes both China and France to run out of manpower since the AI can't upgrade its laws.