I think giving players an option to choose a setting would be a good idea. Not just from an accessibility standpoint but also helps generate a hook so to say. For someone like me who rarely reads books, I found some of the phrases a little difficult to figure out but I am really drawn to some of the books mentioned based on just the phrases. And for someone who reads a lot of books, they might like the challenge of trying to guess and piece together famous quotes from books they can think of.
Am interested to see what you do with the game. Oh, maybe you could add more genres or categories based on famous authors? Cheers!