Outposts if it's pre/during Fallout 3 and abbandoned/mothballed bunkers if it's during/post FO3. I do think it would be a good way to add some high end items and item plans and add a nice side exploration to the game. Currently we tend to get Vaults to explore but without much result. Now an Enclave bunker with turrets, bots and lots of locks and counter measures could be a nice addition.