Mending being more common as a treasure book

Minecraft is a fun adventure game. So what better thing to rewards players who explore the different structures to give them one of the most powerful enchantment in the game? This change makes sense to avoid players who exploit the game's mechanics with librarian villagers. I think mending should be a commonly found treasure in places like bastions, ruins, ancient cities, mineshafts, pyramids and sunken ships, etc...