This is so cool. Would you consider making one that mimics the Windows 2000 or Windows XP Explorer?
Try Explorer++ (https://explorerplusplus.com/), it even has XP icons. Just hide the bottom Windows 7-like bar at the bottom and disable the Tabs by going to "Tools > Options > Window > Uncheck "Always show the tab bar"" and you now have a replica of the XP Explorer. However, it doesn't have the left pane (Not even 2000's), only the "folders pane" view, and its search is not integrated into the left pane. The search just looks like Windows 98's.