To Airborne: "3. Building cost goes from your IC and is higher than normal (+50% ?)"
It shouldn't not be more expensive. Why the fortress build by Germany in the German part of Alps should be cheaper than fortress build by Germany on the Italian side? Doesn't make much sence.
Yeah but its to much IMO - its better to have 1 level for all abroad countries for making it simpler.. So no matter if its Africa or Slovakia - cost of such action should be higher.
The cost of the structure should be determined by the level of infrastracture, the terrain and distance from the sorce of necesary resources like steel. If the structure is built on hostile territory it should be increased due to the level of partisan activity.
It should be then the same for building in own country - but we are not talking about that so 1 level for all countries will do.
Edit:
Often own specialists, advisors, technitians and engineers - also in may times own material and designs so the cost should be higher. That 50% is just an example.