An Idea:
Villages, or at least the Chief can build a Dungeon Door, a gate like structure that allows the Law speaker to open a door to a random dungeon. The lawspeaker can control the difficulty, and at the cost of authority, can even choose which dungeon is spawned.
To prevent farming, the dungeon only lasts until it is cleared, or a ingame week has passed.
I think it would open up more reasons to travel to villages and markets as people would want to visit dungeons, on top of encountering them in the wild. And down the road maybe allow a primitive design function to allow for the creation of specialized dungeons and maybe even arena's. But it can be stylized to allow for the natural spawning dungeons to still spawn, but it maybe also can be used for village competitions like who can clear it the fastest, or most kills, using the special room mechanics already in play, I.E. the endless spawn rooms, or get aggro from x. The point system from shooting targets can be adapted for this.
I know this sounds silly, so I will apologize for wasting time with it, but I thought it was a neat idea.