Of this idea, I really like the idea of a master writing a book to preserve knowledge. I think it would be really cool (and maybe to some degree make sense gameplay wise) to have a max level class create an item that allows for other hearthlings of the same class to gain experience faster. It would certainly make creating duplicate job less of a grind as well as reward a player for making a class get to the max level.
(I admit, I am also a fan of this idea because I still like the idea of a scholar class 
)