In our case, we often batch upload 50-100 images at a time. We're taking advantage of Lightroom's ability to add a caption in description metadata, which auto imports into Later - a great feature!
Media Library improvement idea:
When an image is open in 'Media Library', it would be really helpful to be able to click prev/next arrows (bonus being able to use left/right arrows on a keyboard) to move between images in Media Library. Happening in the order they appear in the library from left to right.
Attached visual example.