In my opinion Roguelike Dungeons doesn't belong in this pack. While it is an excellent mod, the vast amount of loot you can find in them and the dungeons being relatively easy to explore compared to running around at night, just gives you way too much free stuff if you find one in the early game (I'm playing on Hardcore, haven't considered the impact the dungeons have on Survival where death is not a concern and therefore the dungeons are even less risky to explore). I explored the first level of one and after finding a cake, some enchanted leather armor and lots of bread and torches, I was sorted for supplies for a very long time and set up camp in there (although I died a few days later due to zombie invasion). I didn't see a single mob or mob spawner in the dungeon either, although I only explored the first level.
If you ask me the mod should either be disabled, or tweaked so the dungeons are either much harder or much rarer to find.
I feel like your opinion on this matter is early and naive. As you mentioned you have only explored the first floor, that means that you have not really explored any dangerous floors. Come back when you have cleared the third, fourth, or fifth floors.