As expected, Doma/Yotsuyu's storyline keeps getting worse. If 4.1 was about the Sultana maturing by learning how to get a good deal out of helping refugees, this one is about how a good Yotsuyu is am obedient and childlike Yotsuyu. There is something really dark about her "redemption" being removing all agency from her—mirroring the abuse that made her into the monster from 4.0.

Those considerations aside, 4.2 seems structurally identical to 3.2: preparing the stage for the following patch which will effectively end Stormblood proper.