Stepcest only I'm afraid, took the Patreon rules and used it as a plot device.
Thank you, I'm glad that the improvement is quite noticeable
As for the LIs, yeah I understand your worries. For each subsequent chapters you'll have the main LIs that will have their own character arcs, and then "bonus LIs" that are chosen/designed by Patrons. Those bonus LIs will have less of an arc/importance and be here mostly for the sake of a nice little h-scene, unless the design's unique and/or a Patron who designed this bonus waifu gave her unique traits/backstory. And yes, previous waifus will reappear, Lily and Grace's arcs are far from being over.