I think LRM is great and use it to cull and edit all of my photos. As I import into LR (desktop) from my memory card, I add the photos to a new collection that is synced to LRM. I can do 80 - 90% of my editing on my iPad Pro 12.9 inch with Apple pencil. I do review all photos later on my desktop to ensure everything looks good before I print, export or publish. As I said, I am very happy with LRM but would really like to see the ability to sync adjustments to multiple photos at once. It would reduce the time required on my desktop and make mobile editing more efficient.