SUMMARY
It can be a long task to tag the faces of many peoples in many pictures. Whenever group pictures are taken (for instance during a family gathering when you group everyone to take a souvenir), it usually ended with a bunch of photos from the same people at more or less the same location in the picture. Taging each one on each photo is then a long and frustrating task, especially when the face search and/or recognition is failing.

IDEA
Once a picture has faces it would be nice to have the ability to copy and paste those metadata in order to initialize another picture which is very similar. Then the faces can be adjusted. Only the face information would be copied and pasted.