The ARR relics are tedious, but there's a simple way to solve the Animus (book) stage of the progression:
Just let us spawn the FATEs ourselves.
Literally just giving us the ability to manually spawn the FATE, even if on a cooldown, would make the books go from obnoxiously tedious to more of a chore you can knock out at a reasonable pace. Just this one change would improve the grind massively.