Whoah. Being able to lose points definitely adds some extra challenge. I'd also consider having the legionnaires lose a d6 after successfully sacking part of the library---that way they aren't endlessly growing more powerful while you're losing points---but this is optional. Definitely play on extreme difficulty mode if that's what calls to you!
For the fillable PDF, it was generously created by volunteers. I'm not sure I'm good enough at layout to mess with it, but I'll keep the lesson in mind for future projects and make sure the fillable fields on character sheets are wider.
+23 Archivist Points!