When I press delete on a message I would like the next message to open automatically.
Make the toolbar customizable. I like to have Mark as Read and delete on the tool bar instead of hidden in a menu.
In the previous version of outlook.com I liked how when I clicked "Move to" all of my folders were available in that menu. I don't like how in this version of outlook.com when I click "Move to" it only shows the most popular folders and then if I want to see all my folders I have to click a link which brings up a pop up that shows me all of my folders.