What about curated author pages? Maybe with some information about the author and a list of his books by publishing date. I know, this may be too close to the M

What about curated author pages? Maybe with some information about the author and a list of his books by publishing date. I know, this may be too close to the Mahalo-model, but it could help with your low number of pages to index. You could start with your top searched authors. And maybe you could show a little more information about the book when you click on it. I'm not sure what data Amazon provides - there must be more than just the picture, no?