Mods for Bethesda games often take things to extremes, such is the temptation of such a powerful suite of editing tools. But overall The Lost Vault is a very well-made mod, and if you told me it was a part of the main game, I’d have probably believed you. The Vault’s size can work against it, too, with a lot of empty rooms that would have benefited from some additional decoration or loot to scavenge. Some enemy variety would have been welcome.
The Vault is crawling with ghouls, which I have to admit gets tedious at times.