In Lightroom, it would be helpful to have a visual indicator on the photo thumbnails that shows whether a photo has been added to an album or not. Currently, the only way to check if a photo is in an album is by clicking on the photo and checking the info panel. This can be time-consuming when managing a large library of photos. Adding an icon or other visual cue to the photo thumbnails in the library view would make it much easier to quickly identify which photos have already been added to albums. I think this would greatly improve managing and organizing photos in Lightroom.