Books will always be written by people. Whether by single authors, or by the contributing effort of many. I don’t think that a book can be like a video clip: an accumulation of small parts only related by the visual story it tells. A book has a direct link with the reader and need to tell a story. Even if edited by many – as you are now doing – the reader still needs to follow a story line.
in the future, the reading space will be wherever you will want it to be. By looking at a spot in the corner of your eye you will start the possibility to incrust text on your normal vision. Imagine sitting back in a comfortable armchair, looking outside your window at your garden. By focussing or relaxing, you could change the focus on either the garden outside, or the text overlaying on top.