Google is pushing a new "Email experience" [0], in which the compose window becomes a smallish rectangle near the edge of the screen, and every editing option is hidden inside menus. The rest of the screen is just an unusable background now.
How can anyone think this is better than the current design?[0] Before - http://i.imgur.com/FvnkaWX.png
After - http://i.imgur.com/0mTa36W.png