I prefer to buy older books, some people prefer to buy newer books. I would love the copyright date to be part of the book details (usually connected to the ISBN info) so that we can search based on year published.

Same for publisher. If I'm searching for a specific edition, it would be nice to filter search results by Publisher. Like if I want a Barnes & Nobel Copy of Pride & Prejudice, but the ISBN pulls up Bantam, Signet, Dover Thrift and hundreds of others, I'd like to narrow it down more easily.

Bonus: Create a Tag for people to choose: Antique (over 100 yrs old), Vintage (over 20 yrs), Modern (within 20 yrs), New Release (within the last year)...or something similar.