Thank you for the feedback.
Right now I’m considering the following rules for neutrals.
1.Once a country turns pro allies or pro communist, your side still has to move a unit in during non combat to seize control of the territory.
2.Each faction is limited to buying 1 unit per ipc value of the country per turn. So the Soviets/Warsaw pact could only buy 2 units for Spain and the allies could only buy 2 units for spain (unless its ipc value has been bought up).
I will look into the tank techs further. My initial thoughts for revising the tank techs are as follows
1.Sloped Armor just keeps tanks from being hit during the first cycle of combat (unless the opponent has tank destroyers)
2.Heavy Tanks now cost 10 ipcs. They may no longer blitz. Automated assembly lines just reduce the cost of tanks by 1 ipc. They could be represented by a different piece if people have one, so they could still build regular tanks.
3.Main Battle tanks- moved to the final tech in that tech tree.
I’m interested in further suggestions.