Since the shadow crystal/schizoboss pattern got broken up a bit, I think that dark-light swap AUs should be refactored more around the first 3 chapters' Darkners in general (especially now that we know they all interacted.)
That said:
>who would (You) be interested to see in Ralsei's and Noelle's roles, given a human Jevil(<> Kris) and monster Spamton (<> Susie)?
I had Noelle's swap planned out as being Rouxls before the new chapters came out...Ralsei's role was going to be based on Nacarat Jester (cool anagram opportunities) as a fitting counter for Jevil. ERAM as Ralsei would be funny, but it might be too chaotic with Spamton and Jevil's personalities.