If I have a construction unit on patrol, and I tell it to build something it basically ignores me because it tries to "complete" it's patrol before it builds. I would like it to put the build orders in front of the patrol so it builds the structure and then returns to patrol.
Similarly, if I have a construction unit on guard duty and then I shift click and tell it to reclaim something it never happens because the guard duty like a patrol route is infinite.
I would also like to be able to place future structures on top of each other. Like if I have a mex shift built on a slot and somehow another unit is closer I want to be able to build over top of that spot without having to cancel the original order.
Ghost structures shoould not impede real structures and construction work.