I don't think it was but most of my rooms were built long before I started playing again so I don't remember all the details. On the plus side excavating space for the rooms tends to get you supplies or alloys and you can always remove rooms you don't need anymore. You also have engineers that you can use to reduce construction and excavation times or put them in rooms to increase productivity. I ended up finishing with 3 spaces without rooms and almost twice the power I needed and more then enough open radio contact slots. Granted this was the vanilla game I don't know how many rooms were added in War of the Chosen.Out of curiousity, is base management in that game as harsh as it was in Enemy Unknown?