Why go though the trouble of building a large expensive time consuming base when i can just drop a standard terminal as you cant kill it for 12 days and standard thermals are cheep. No way to keep people from leaving as a term cant be placed near it and cant be terriformed in. Natural terrain bases can be build in such a way as to be unbreakable, if the 'Auto mining towers are vital for a base to work then theirs no point in having the base in the first place as you have this big weakness that will make your base Defenses worthless. Need more info to make better assessments.