- For any photo show list of albums that hold it. The UI for Contact/Folder relationships would do.
- Include Folder name matches in search results.
- Port Photos.iOS feature that shows geo view of images for an album to Photos.mac
- Provide a list view of images with metadata
- When exporting images also export metadata (ideally in image header, otherwise XMP sidecar
There's a few more I need to add but I'll remember them as I work/curse Photos.app.
Not a modest change but great benefits for customers - extend PhotoKit so third parties can fill gaps better.