Books like those found in Elder Scroll games would be a great addition to the game. I have not played Guild Wars 1, so when I play Guild Wars 2, I am very interested in the history and lore of Tyria. I remember finding a “Book Cart” in Divinity’s Reach and I was excited for a second, then I find that the book cart is actually empty…
With the living story and all, I think it would be great for Arena-Net to create virtual books. This way, new players can read about past events. These books do not even have to be accurate and different races can have different accounts of the same events past.
Since the writers are already writing stories for Guild Wars, why not make them available in game as virtual books? They can even offer skill points or clues/instruction to well hidden locations and treasures.
If ANet ever add books into the game, I would also like to buy special inventory lots (cash shop item) to store all the books I may find. It is a cheap and easy way to enrich the world and make things interesting.