I would find it very helpful to have some more information show in the popup that shows when I hover over a resource in the passage guide. Maybe it's just because of my usage pattern - in the interest of keeping my prioritization list reasonable and relatively uncorrupted (I had some problems in the past when I got fancy), I've stuck to prioritizing commentary series, but not the individual volumes. I have, however, rated each volume in my library. Sometimes a lower prioritized series has the best volume on a particular book of scripture.
It would be great if I could see my ratings in the passage guide just by hovering. As is, I can only see them in the library.

While you're in the section of code... the year of publication would also be handy.