Most of my items don't have document pane content or linked images - so when I am browsing through items it would be easy to miss this additional content.  It might be helpful if I had an option to have the Document Pane automatically appear when I browse to an item with Document Pane content.  Also an option to have an Image Viewer pane pop up when I browsed to an item with a linked image.  These panes could be hidden when I browse to an item without document pane content or a linked image.