I am probably confusing terminology as I wasn't so much concerned with how the catalog is generated as with how it is displayed. If I had to narrow it down to a "concept", I guess I would say that I would like a "cleaner" way of browsing the catalog with having more covers visible at once by using more screen real estate, an without have to click on links as much as I currently do. Also, I like browsing by book cover, so a display that has a grid view of the books, instead of one column, would be nice.
I personally would not be a fan of an "All books" view if all of the books were on one page, as this could get unwieldy with very large catalogs. I do like the idea of sorting by author, but I prefer it if when you clicked on "C", it would then display the covers of *all* authors whose last name begins with "C" (like
this), instead of having to then select each author one by one. I'm not sure if that is possible within the current framework, but that's my whishlist