TL;DR
Make it possible to create non-rectangular buildings.What?
Some buildings are not rectangular in shape, and when they are large enough, they leave empty space at the corners of the bounding rectangle, which can look incongruous if other objects adjoin the building in that location.For example, inserters moving objects into the “empty” space.
Look at this lab (from Paranoidal)
For example, you can make it possible to set the end points of buildings not by the corners of the rectangle, as it is now, but by a list of coordinates of the corners of the polygon.
