Recycling versus Scorched Earth!

I don't really frequent the forum so if this has been brought up before I apologize, and please direct me to the proper thread.

That being said the ability to disassemble both improvements and units would be extremely helpful in the global game that in many instances has become more of a cat and mouse hide and go seek for the last few players. if you could roll through undefended territory and remove improvements that would cut down on it.

You take over a territory and say after a certain time frame 4-6 hours or whatever. You are then able to scrap improvements to recycle resources, maybe half of the build costs. How many half built shipyards, or barracks do you have hanging around that you dont need?

Also same with unit dis-assembly you've run into a food problem? you can dis assemble those 300 anti tank units sitting in the middle of nowhere and not only recoup some of the food you need to feed your other troops but also reduce your food consumption.

Just a thought would be interested to see what the community thought about it....and like I said if its already somewhere else please point me in that direction.