I'm more interested in instanced dungeon.. or some sort of that.. Like a replica of some dungeon, but then at the end some Boss/MVP with a reward. *dungeon full with elemental mobs (like a earth dungeon etc etc) IMO wouldnt be TO hard to script.. I suppose... Just copy the Thanathos Tower npc's with other tele places.
plus it will be original, and not gamebreaking. Since you just put excisting mobs together on one map... And just start with something easy.. and then expand it over time...