I changed the ratings because Legion and others that supported the idea of grades being given too easily. The POSTERS initiated the changes. Anonibet had nothing to do with it. If that were the case then Anonibet, Cloudbet and Nitrogen would all be "A"s and everyone else below. The rules aren't tailored for books with banners up.
Also, the suggestion was to cap the max rating, not to automatically award the max rating based on how long the book is in business.