In all of their games, they have about different themes you can count on one hand. Fallout for example having vaults, medical buildings, schools, underground areas, caves. However, once you enter at least one or two of each, you already know how it's going to mostly play out, killing most of the suspense of any surprises that aren't specific or uniquely scripted.
Skyrim had better designed dungeon sets which felt more organic and natural, but once you've gone through a lot of them you end up not being surprised anymore. I feel like if you're going to see the same tiles and textures all the time, that you'd better go through some amazing level design to make up for it. Fallout 4 could have more "one kind only" dungeons. I'd take 3 less dungeons in the game if that means I could have 1 unique dungeon set that isn't reused other than that. I'd like a nice amount of those. I feel like the wasteland will offer a nice variety with abandoned houses, settlements, raider hideouts etc that will keep it fresh. I'm just worried about the dungeons. All vaults don't have to be the same. They usually offer a good backstory to the place, but there's too much useless junk for what often leads to loot that isn't special.
Is Betheda going to step out of the oldschool dungeon crawling for random loot ordeal? I feel like it's a telling of lore with filler gameplay. I love the lore. Exploring the outdoors and towns is always refreshing. Dungeons are very so-so.