…Might be worth repairing/upgrading some of the existing underground structures before implementing new ones. I mean some of my biggest complaints are with the Labs, Nuclear Silos, and Military Bunkers.
Nuclear Silos are disturbingly empty for what they are. As it stands someone’s come along and stuck a rocket in a hole in the ground, not exactly accurate. There’s a lot of side-rooms, barracks, and more than a cave with a computer in it for launch control. Nuclear silos could stand to be a light version of a lab layout wise, with considerably more security. (We’re talking Roaming Secu-Bots, turrets, and maybe a special ‘military police’ robot.) Probably some rooms with functional lighting. Most importantly, some form of multi-person launch procedure. (of course with some kind of computer-related override.)
Military bunkers could stand to receive a slight change as well, more security, less six room loot pinata. Maybe even operational lighting.
Labs are a clusterfuck of mix-n-match pieces that come in a couple flavors. Don’t get me wrong, they’re pretty impressive as is but could stand a little work. Less couple hundred four rooms and a cross hallway, more lengths of hallways with a bit more decorations. More resident evil, less cave with tables in it. As it stands, the regional schools have better lab setups than the lab bunkers (What with sinks, and proper setups instead of assortments of storage rooms.) and of course, more operational lighting.
But yeah, there’s my complaints and ‘underground structure ideas’