One way to dream up post-book media to make reading more effective and meaningful is to systematize "expert" practices (e.g. How to Read a Book), so more people can do them, more reliably and more cheaply. But… the most erudite people I know don't actually do those things!
My view: everyone is different, what works for one person may not work for another with different personality. Also I tend to discount "expert" explanations. They tend to be too neat and systematic. Experts think they do one thing, but actually do another. (ala Freakanomics)