I use Reader primarily to comment on students' scripts. So all I want most of the time is the comment icon. I had that up to about 5 months ago. But now it has to be re-chosen from buried deep in some menu maze. Also now, clicking on the comment creates a new comment box, and just occassionally allows me to edit the contents of my existing comment.
Something really simple and useful has been made complex and frustrating.
One extremely useful feature that has been retained is the save folder which defaults to the previously used one with an easy menu to previous choices. A startling contrast to the cack-handed Word method.