My thought had been, sometimes there are people who come to con who are brand new to otaku subculture. Maybe they've been to other kinds of cons and are at their first anime con. Maybe they are just there as a parent or guardian and haven't ever read a manga themselves. Anyway I was thinking Manga Library has this nice quiet peaceful vibe that might be a comfy starting point for some people, and anything that was in the room that could help bridge a total newbie into finding manga they'd like could be helpful. I know if I had walked in at my first con 8 years ago, never having yet read a manga, I would've had no clue which volume to select. Maybe a basic handout or poster with some key words and definitions of genres and some examples of titles of each or something would be a simple orientation, rather than a big published compendium of summaries/reviews.