Hey, I got sparked!
Here's what it looks like --
It seems to me that the previous arguments have some bearing on "but Tzaddi is not the Star." The Emperor (old Tarot) probably refused to credit the Old Girl and preferred to keep "house" for himself in some isolated and idealized image of Chokmah. It took the Hierophant to step in and make the switch, thus granting the Emperor, should he wish it, true Tzaddi (which descends from Nuit -- as it did). Meanwhile, now that she has her Window back, she, the Star, finally gets to take a breather (all that ruling through the subconscious was hard work!).