Among the possible what if? I always hoped he would make a sequel to what if volume 8. Where Ophelia start to become more ambitious and became not just a librairian of a school, but the principal (or a dean) so she is not only in an a role of autority (since she loves being in charge), but she would also have a constant "supply" of women to impregnate (both students and teacher).
I have made these a long time ago, free to you to read them, lower on the page (avoid the long first post if it's not your thing) is my plan for a what if volume 8 part 2 where I describe a Futa ophelia now a principal and being all in on the "NTR impregnation"