What has been working the best for you with Dragonmaids? I moved my Bystials to 3 and I'm keeping the same ratios on Sublimation and Evaporation, but I've been seeing people remove Sublimation and keep the other at 3. Also an increase on Ghost Belle instead of Droll. I'm interested in the Millennium engine, but I feel it won't give me as good results as I would think since I would only gamble with Zombie Vampire, and another option would be adding even more Bystials along King of Atum who can special summon a dragon from deck, but it sounds inconsistent.
Took me 3k SR dust to get that one royal Kitchen, now I have less than 300 left.