Did you remove "Arrange Panels" & "Show Left Sidebar" commands under View menu when this was implemented? I can't find them either from 3.0 or 3.1.
If so, I don't think that's a good idea. The commands were for new users who can't find out Configure Layout button to change the layout and they would be still useful as quick settings too are located under the same button. If there were other changes regarding this that I didn't notice, please let me know. If not, hope you reconsider it.