When I have 2 copies of one folder structure, I often want to browse them syncronically to replace files or to make new folders.
-> It would be nice if I have button between 2 panels, that makes navigation syncronical (left panel and right panel). Like a switcher on/off.
-> And the second switcher with syncronical edit of file structure like: create/remove folder, rename file/folder, copy file/folder (in this case it would be right to give a same changes in both structures (not such) )