Anyone else find Vault-Tec and the lore behind them very interesting? It would be pretty cool to see DLC that digs deeper into them and their vaults. A buddy and I were playing around with an idea that a completely preserved vault lies under the water that we have yet to discover. Maybe the experiment is much like the mini-series Ascension ,where the dwellers believe they're on a self-sustaining space station orbiting around an uninhabitable Earth. I should note that fallout 4 is my first experience with the series so a similar idea may already exist in previous games. What do you guys think?