This show has a great cast and I really like that there are heroic characters of various ages, not just teens and early twenty somethings. Too often these days there seems to me to be a lot of ageism in these types of shows, the heroes are always bit's of kids with everyone else being mentors, pathetic, or villains. Not that there aren't young characters but the balance seems more realistic.
Not everything has to be Buffy.
I thought they were really onto something whenever they mined literature for ideas, something that seems obvious to do in a series named The Librarians and I was surprised they didn't develop that aspect even further, and I hope they explore that more in the future.
De gustibus non est disputandum