Re-use the assets from Levels made for bosses,made normal levels with boss level like textures and puzzles.
Chaos Element Level : The level is a whole family monster,but all element monster can spawn,thunder,fire,freeze,poison! all in one level!
Chaos Element Nest Level : is like a Deconstruc zone,but with one single element,and all mosnters from all family monsters,but from than single element!,like Devil-IT.Electrolisc,Stormkats,and Quicksilvers,for example.
The idea of a one enemy type, all statuses. Is preety neat, i like it.
The dungeon might be more used in some arena styled levels, or a "rare occurence" level, like some parts of cradle got mushed together and now you must survive this mess.
Maybe it can be like Starlight levels in the arcade and you collect a material like zee cores (not see cores) to make an armor that resists all statuses by only a medium level for balance (doesn't include stun, curse or sleep) maybe it can have only normal defense (somewhat like the Vitasuit) maybe it can be a 5* Vitasuit Deluxe (same thing they did with the pathetic Cautery Sword) I imagine it'd be great with chaos cowl.
But all monster families one status will be just a huge mess...
While this would be interesting, it would take away a bit from the whole "swarm is all the monsters" thing that it has going on. I think having one monster family of a rainbow of statuses would be the best way (in cold blood's final level is a great example of this!) to pull it off.