
I was expecting RFC to throw a kracken into the swimming pool at the end of the book.
IMHO, What is coming is a Schueler & Shan-Wei factional respite.
We can say the IC and (perhaps unwittingly their allies) are supporting the Shan-Wei efforts to guide Safehold closer to an original plan for Humanity's development into an effective adversary for the Gbaba... contrary to Langhorne & Bedard's subversive alterations to the original plans.
The destruction of Alexandria and the nuking of L & B at the staff meeting left a huge vacuum of leadership. We can assume Chihiro grabbed the reins of power with Schueler in support. The subsequent 'War against the Fallen' decimated lesser Angels, Sejins and perhaps Archangels. Leadership thusly becoming more vacuous.
I want to believe that Chihiro was responsible for Khody's demise and later the destruction of his original shrine by a kinetic strike. That could have upset Schueler enough that he recorded the message for his descendants and set up the Mutinous Message delivered at his Temple at the end of TFT.
That message specifically stated;
For know this, this world has indeed strayed far afield from the plan for which your forefathers and your foremothers, the Adams and the Eves who left you The Testimonies, were brought forth upon it.
If Khody was correct in his view of Schueler as the Archangel he could trust and being an honorable divine being, then that Testimony of Schueler should be quite subversive to the COGA.
What resources could he have left or assets of knowledge to groups like Sisters of St. Khody or others.
Thanks RFC for the Kracken