Originally posted by Willem:

Yes, building in dungeons would be outstanding!!!

https://valheim.thunderstore.io/package/JereKuusela/Infinity_Hammer
or maybe https://valheim.thunderstore.io/package/LottieVixen/Build_In_Dungeons but that's not been updated for a year.

It really wouldn't hurt to have some minimum requirements for dungeons and have the generator re-roll anything that doesn't meet them. I see too many staircases to non-existent second floors.

Not sure if this works with the current release but it has some information about the generation algorithm:
https://valheim.thunderstore.io/package/OdinPlus/Digitalroot_Valheim_MaxDungeonRooms