Here's an enemy idea that came to me in a dream
I dreamt that, in ToTK, you could sometimes find and fight these enemies, whose designs are inspired by the Yiga blade masters and the Bargainer Statues. I filled in the blanks when I woke up. I decided that these guys are an elite group of morally and politically ambivalent mercenaries with some connection to the Bargainer Statues (maybe they kill powerful people to send strong spirits to the afterlife and appease the god of the Bargainer Statues, or something like that). Their members are strong warriors from all the main races of Hyrule - you can encounter members of their clan that are clearly Rito, Gorons, etc. under their robes - and their leader is an exiled male Gerudo born sometime within the last hundred years. Their main weapon is a falchion made out of smelted Zonai Construct parts and dark lumps that deals gloom damage, and they wear plate armor underneath their robes. They've been hired by Kohga to kill Link. If anyone else likes the idea of these guys and wants to use them for your own art, please feel free.