Being a completionist, im currently working on getting all the animus weapons with all discipline of war and magic jobs. I'm currently on the "Book" part of many of the weapons and boy what a waste of time. I have bascially two adjustments which i think SquareEnix should explore...sorry if this been covered in other posts.

Firstly, adjust the number of books(fewer books), but increase specific mobs, dungeons, leaves, etc.

Or, second, just allow player to purchase ALL the books(per weapon) at one time and complete them, simultaneously.

I hate the back an forth in regions, and killing only 3 per book per run. Waste of Time.