Something I noticed, and it bothers me, is that, in some missions in the XCF, some of the factory buildings have double doors, but those doors are treated as two individual doors, instead of double doors, so they always open to the same side, even when it doesn't make sense to. So I am proposing that tiles have a property to be rendered mirrored, including their behaviour during gameplay, so double doors can, not only be opened individually, but also be opened in a way that would, also, allow 2x2 units to move through it, since it is quite bothersome when you have enemies stuck inside warehouses that they could, easily, leave from in real life, just because the doors are wrong.