Bukkit

What is the enhancement in mind? How should it look and feel?

I dont know if this is beyond the scope of this mod but as you said, it is also a loot mod. Maybe, if it's possible, you could add a random item from the loot file to fortress/dungeon/ocean monument chests.

Also, a separate idea; increase the spawn rate or guarantee an infernal mob in said dungeons etc. Just some random ideas.

You already can increase the spawn rate, read the info.

Oh, I know, I tweaked my own. I just meant for things like dungeons specifically. Areas that are supposed to be hard; might make them more challenging. Thought it would be a perfect use for this mod.

And finding things from this loot mod in the chests might make it worth exploring them.

Just some thoughts, thats all.