The next request would be to destroy your own province infrastructure a /buildings when another player is invading your country... it has been suggested many times in past, this is essentially revisiting familiar ground
Sorry, didnt know that. I personally can see how that can be a big topic as it would impact the game significantly. I am personally not a fan of the idea, but I want this feature for harbours because you can choose where to build them specifially. Its a unique feature and I think it could benefit from being able to relocate them (with a cost) instead of destroying them.