I think that these requests are neither irrelevant, because people here say what thousands of other people think,
nor impossible to implement so I'm wondering why we don't get any statements regarding a future update.
Reading eBooks on WP7 is a pain at the moment. There isn't a particularly good way to convert your PDF (and their bookmarks) into EPUB or something similar and the Adobe Reader too slim to for reading a book with 200+ pages.
I enjoy Adobe's way of software design, but I expected more agility in their community feedback system.