Librarian Trade Concept

With villager trading, the librarian is the most OP villager with its ability to give almost any of the enchanted books. I have an idea that could make getting the specific enchantments that you want more interactive and tied to exploration with less of a chance to brute force the trade algorithm. First off, the lectern is a unique job block because of its interactive nature; specifically how books are able to be placed on top of it. This sparked an idea, using that interactive element. Imagine tye librarian not offering any enchanted book trades in its early trading levels. Once you’ve traded enough with them to become a master though, they offer their enchanted book trade- but the catch is that the enchantment they offer is dependent on what is placed on their lectern. To get the enchantment you want though, you have to explore different structures in your world to find something I refer to as ‘Tomes’. Tomes wouldn’t have to replace finding enchanted books in the wild, but would be more common than enchanted books. Each tome would have a different enchantment associated with it, and are unable to be used to enchant; but when the tome is placed on a master librarians lectern, that librarian can transcribe the magic text from the tome onto a book, which could then be used to enchant your gear. This idea encourages exploration, and would make finding the greatest enchantments very rewarding. It stops lectern spamming, and offers renewable enchanted books that feel earned.