Hello. I’ve noticed that building a basement is restricted when your base is located on a mountain. Could you possibly add an option to remove these restrictions? It’s quite frustrating, as my base is on a mountain and I can't properly utilize a basement. Also, is there an option to make base entrances indestructible—meaning they cannot be destroyed, unlike the locks? In other words, you could only blow up the locks, but not the entrance itself; that would be fantastic.