Turn Folders into Metadata
It would be nice if when users use folders in libraries that the folders also counted as metadata - This way we wouldn't have to try and change behavior which is extremely difficult to do and proper metadata would be applied to all files within each folder appropriately.
Colleen Parker commented
Discovering the Column default value settings was invaluable for me. It allows me to have the default metadata set on files when they are dropped into a folder. https://www.collaboris.com/how-to-set-default-column-values-on-a-document-in-sharepoint/