An example of a book prepared in a number of formats and screen sizes is Bertrand Russell's _Introduction to Mathematical Philosophy_
http://people.umass.edu/klement/russell-imp.html
It's interesting to see the formatting which one gives up when using the ePub or other re-flowable versions in comparison to the .pdfs prepared by LaTeX.
Unfortunately, improved ebook rendering would require a fair bit of processing power and memory space, as well as a mark-up scheme far more detailed than even TEI w/ the ability to add information like:
- set the following paragraph one line shorter if possible if Fig. 2 doesn't appear on this page so as to bring it back
When doing STM page composition using LaTeX I add a package line in which I store macros for doing such things and another for the special formatting --- I then provide to the author special files for them where all such macros are defined as \relax (or as their arguments if they take any) and the book paginates to the LaTeX default.
William