I think we could expand this to include...

...librarians who specialize in readers' advisory:

So while I’d enjoy getting into some back and forth about elitism and popular tastes, literary fiction versus genre fiction, the problems with “MFA fiction” and more, I’d really love to suggest a concrete, and really quite small, change that could be made in the way judges for major prizes are chosen: include a bookseller on each jury. I’m not suggesting that any old bookseller will do, but then any old writer, critic or editor shouldn’t do, either.