Well, the Quick View of files is shown in the opposite panel. And I find two panels a benefit for copying, moving, comparing. unpacking.I would like to end with a question: what is (in general) the most benefit of displaying 2 panels (in stead of 1)?
BTW, you don't have to use the slide-the-panel-divider-all-to-the-right together with a separate tree. You can just use a tree in the left panel (Ctrl+F8) - then you can also use Quick View