A simple idea--- not game changing, but welcomed!
In the base editor, I think adding an option to "select all buildings" would be helpful. What I mean by this is that for all buildings currently on the map/field, you can select everything and slide your design over by as many squares as needed. We all have been at the point where we just need one extra row on the bottom of the base.. Selecting all would allow you to shift ALL BUILDINGS AND WALLS at the same time instead of having to start over or move everything one by one.
What do you think?