Currently, bosses are mainly run as the primary source of spellbooks. Unique Boss Drops would give another reason
to hunt for these bosses and would be in demand as they would excel at defeating the boss which they were obtained from.
I’ve compiled the full idea into a google document in order to be able to create tables and upload images. https://docs.google.com/document/d/1jCM7WpOe4H9K_mczAEH3TO6W8pQbgKrmXy0ULSzwrdQ/edit?usp=sharing