P: LrM - Allow application of metadata to multiple photos at once

Allow me to select multiple photos and apply stars & ratings to the selected photos. Frequently I like to mark all photos as 3-stars, then filter on >= 3 stars. I then start setting photos I don't like to 2 stars to remove them from the visible set. As it is I can't mark all photos as 3 stars in one batch, I instead have to use the desktop to do it.