removed Note: Dungeons have to be open world, with re-fillable loot chests and configurable mob health and damage. EDIT by Moderator: merged posts, please use the edit button instead of double posting.
I think I can do this. All I'd ask for would be fair credit in an announcement or such. PM me if you're interested.
I am working with my team on a dungeon plugin. For the chest thing, you might want to see the treasure chest plugin.