I don't know. When you look at blighted Village, there are more buildings than three. The blacksmith shop, the apothecary, the school building are the only three you can really explore. There is the windmill, and there is a building you can't enter across from the blacksmith. Then there is the building where the bug bear and the ogre female are being nasty. So I get what you're saying that there isn't much to blighted Village. But it is a very old and decrepit ruin, so there could have been more buildings even where the nautiloid crashed which have fallen into ruin or simply don't exist anymore or whatever. Still, I agree that the entire Village seems way too small even if it's like a fishing Village or something similar.
But the main thing that puzzles me about the decrepit Village in the underdark is that it looks like it was maybe originally some sort of orc camp but then you have some more human-like buildings. Of those buildings, only one of them looks like it maybe was a place to sleep, but it is a very small shack. The point I was trying to make is that it seems like there's some sort of larger story to this Village but they're giving you really no clues about the story. There's lots of Bones including two large serpent skeletons, a collapsed mine, and so forth. I would just like to have a little bit more to give me a better idea of what this place is really all about.