Here is my list of iPhotos features that have vanished from Photos: 1) Creation of places (ie. you draw a circle on a map and give it a name). No workaround. 2) Adding/changing location (geotagging). Workaround, edit the geotagging in iPhoto and reimport the picture in Photos. 3) External editor. Workaround: drag drop the picture to your desktop, open it wit your favorite editor, do your stuff, save, reimport to Photos, delete old version from your library. Cumbersome? Yep.... 4) SHARING INFORMATION HISTORY. Of all missing features, this is the one that made me the most furious. No way to know if you already shared a picture, posted it to a stream, etc... Nothing! No workaround. 5) Rating 1 to 5 stars : from now on you can only like a picture. Workaround: use keywords. 6) flagging picture : another useful feature gone. Workaround : use keywords. 7) Rescan picture for faces. Workaround : move picture out of library, re-import. In conclusion: what a sad joke of a downgrade. Feel free to complete my list.