I now think a similar idea could apply to Finland.
Its 4 infantry can only move in the following territories:
Finland
Vyborg
Karelia
Norway
Sweden (not if the Axis are at war with the strict neutrals)
When a territory is captured that has an industrial complex, there should be an automatic reduction in production capacity due to several factors: battle damage, sabotage, lack of skilled workers, shortage of materials, production changes, etc. To reflect this, for minor or major, roll 1 dice and add this damage to the complex.
Interesting and working I believe.
Did you also think about reducing Major to minor if IC is conquered?
When liberated, IC remains at the same level.