Just barely stumbled upon this jam, and after looking over the Pitcrawler SRD, I had a great idea: Librarians!
I'm developing a document (not sure what to call it, not a setting, a reference? Something else?) that will attempt to outline five truths about Pitcrawler librarians that simultaneously reflect & reject the five truths of Pitcrawler wizards. Maybe even (if I have time), create a few wizards & librarians of my own as well!