Angry with the complete lack of options
What I never like about "improvements" is that you remove the user's ability to set up the page the way we would like it. Before I was able to easily access folders I need all the time on the left side of the page, without scrolling down. Now you've decided that I have to see a list of items I don't need, including "unread" and "starred" so that I have to take time to scroll down every time I want to move a current message into a folder. When you make changes in future, please allow the user to order items on their page themselves! Second, the window to actually READ a message is absolutely miniscule. We used to be able to make the window larger and see a shorter list of new emails. Not any more! Not helpful AT ALL. I'm not seeing anything I actually like.
