One thing that would make setting up factories in different areas is making it easier to align foundations. To be more specific, the first one you place is freely anywhere, and after that you can align them nicely with it. The problem is if you want a base or the like farther out to be aligned, you have to push your foundation out to there to ensure it lines up.
A "snap to existing foundation layout" could easily correct this. Say I lay down foundation, and assign it to "foundation 1", then when I'm placing foundation elsewhere, I can fit it to the current grid that "foundation 1" is using to align it. This would make getting things aligned so much easier.