so after the .73 update, each player can see what buildings they own, which reminded me of an idea I posted a while back. so my improved idea is that every player should have to option to build on other colonies. the buildings would be rented out to the host colony so they can expand. the only way to build in other colonies though is if they are a sub-colony, or if you have diplomatic relations with them. if you are building in another independent colony though, you will need to gain their permission before building. if you decide you don't want your factory anymore you can choose to sell it (or gift it) to the host colony for a price which must be agreed upon by the both of you. if the host colony stops renting your factory and you can't sell it to them, then power will be cut off from the factory and it will shut down.