Since Planning mode is to allow us to plan ahead. We shouldn’t be limited by existing infrastructure. What if I want to re-build my entire Terminal layout, I can’t just delete everything so I could place planned object when it doesn’t interfere with the existing infrastructure in the first place.
So yeah we should be allowed to place our planned object everywhere we want, even overlapping wall, existing building, room and such.
Example let say you want to put 5 medium security stand on your existing 2 stand that separate by a flower pot, you should be allowed the place the plan on top of it and line up how ever you want.
If you still don’t understand, imagine the game doesn’t allow you to place planning foundation over tree and you have to delete all of it first. Same go for planning thing on wall and existing infrastructure. (I’m lack of word)
Above me is an example, instead of counting each cell, we should be able to place it anyway and see how would it fit later on.