What about Resources?As the resistance grows in an area it has several effects:
- available supply is reduced creating bottlenecks
- your enemies get increased intel and will be able to see more of what is going on
- factories will suffer from sabotage and will need to be repaired
- troops will take more attrition
It doesn't make sense that an area is gladly handing over all their resources to the occupation if the resistance is high and the occupation has no military presence in the area.
I guess the amount of resources is tied to the occupation policies, but I think resistance could also lower it.