I'm hoping that if I ever do "upgrade", I'll be able to avoid the home screen. It is ingrained in me now to hit the "home" button when reading; I would change that to pressing the "Books" button instead. The only time I think I would be forced to the home screen is when I "finish" a book.
And a firmware request for Kobo: make it an option to go to the library when you finish reading a book.