Pre-constructed reading lists
Considering the content on the site, I bet it would be cool to have pre-constructed reading lists on offer (for example, "A Tour of Serial Novels" that would take you through Dickens and Dumas and etc.). I know that members could make their own reading lists to this effect -- I feel like the site is set up to point me in that direction a bit, but maybe prime the pump? I bet it would be a cool counterpart to the (seemingly very popular) Wikipedia Tours. Also, I could imagine it as a sales vehicle -- match up some modern, paid content, with some classic, free content in a clever way. For example, The Soul of the Rhino with Just So Stories and some other classic travel/nature works. My own personality (which others on this site might share) is that I love lists, checking things off, etc. I find the percentage read tracker on the profile page very inspiring. Constructed reading lists that tour people through types of books might appeal to that sort of nature in people.