As suggested by @ebr I have split my original request to allow better monitoring of interest and progress.
The original request is here https://emby.media/c...brary-overhaul/
If you are interested please like the post.
I have noted that when I open a video from my picture folder, Emby doesn’t "understand" that it is part of the photo album and open it as a single file in the video player instead of the slide show. I think this should be seamlessly integrated into the Photo slide show. I don't know if it a bug or if it should be considered as a new feature.