Reduce the number of levels in the user interface
Even though you have introduced the "new and improved" (NOT!) Ribbon UI you have not made any significant changes to the number of levels to access features. You simply bolted that "new user only" UI on top of the old menu system of dialogs. The old menu dialogs were designed in the 1980s for VGA (640x480) resolution screens! Come on, it is the real world now, desktops regularly have HD 1920x1080 screen resolution. Sure the old resolution may still be appropriate for smartphones and 7" tablets, it is not reasonable for desktop computers!
Home tab > Styles group > Dialog Launcher > Manage Styles button (random icon on button) > Import / Export button to display the "Organizer" dialog (note mismatch between button name and dialog box name!)
Display the Navigation Pane > click on the itsy-bitsy drop down arrow > Select Advanced Find > click on More button > Format button > Paragraph option to display the "Find Paragraph formatting" dialog. The button to display the Find Paragraph Formatting button could be moved directly up into
In the Options pane, move things from the "advanced" option to the appropriate existing Options (ie general section to general option) and move more of the advanced sections into new options. Move stuff in the options that is accessed via buttons directly into the options display..
File menu > Options command > Advanced option. This option has sections "Show document Content" and "Display" that probably should be moved to the "Display" option. There is a "save" section that probably should be moved into the "Save" option.
Advanced option also has a button to launch "File Locations" dialog. Why not move that up to become an option. or simply embed the dialog fields directly into the advanced option.
PS: if you start moving stuff around, I personally would rather see it repeated in 2 places. That way it will be logical for new users, but still findable for experienced users.