Mylio already has a Save Metadata to File command. I’m requesting its inverse: Read Metadata from File.
Purpose: refresh/reload metadata embedded in image files, after metadata has been edited in an external app. Mylio uses XMP sidecar files for metadata storage with all image file types. Many (most?) other apps - such as Lightroom - only use sidecars for RAW files. For other file types like JPEG, those other apps write the metadata directly into the image file.
Currently, the only way I know of to get Mylio to read updated metadata from a JPEG file is to remove the file from Mylio, and re-import it.
My main concern is just for basic IPTC-type metadata fields - specifically Keywords, Caption, and Date Taken. This feature would allow bi-directional interop for basic metadata-editing between Mylio and other apps like Lightroom for non-RAW files. My current scenario involves thousands of scanned JPEG family photos that need to be tagged & dated.