This mod increases randomness in the game (dungeon rooms). Here it is:

Now You have a chance to encounter unguarded treasure rooms, unguarded rooms with curio objects and there is a 50/50 chance to have a secret room in small dungeon. I also modded boss dungeons, because there was always the same number of battles + guarded treasure + guarded curio. Now in there is 50/50 with unguarded too but still 8 room battles. ;)
If You will be lucky You can find less empty rooms and more loot...or...Take a deep breath.

Give it a try! Let me know what do You think!

Unpack the file and copy it to the Darkest Dungeon > Scripts file (don't forget to create a back up)