PF1 has so many options for player classes, archetypes, spells.
Since PF1 is coming to an end (with PF2) perhaps now is the time for a collection compendium type of book.
Spell compendium
Collection of all spells of PF1, and organized list
This would be very massive, but useful (I think) book
Class compendium
collection of all the various classes of PF1
again would be very massive
Archetype compendium
collection of the many archetypes in one (big) book
Perhaps even other collection books (equipment)
Previous requests for this type of compendium books often where answered with
They will soon be outdated
They signal the end of an edition
