With preloading so that the next photo is displayed in full.
Without transition effects, making it easy on the eyes and allowing the photo or video to be seen immediately.
Option to choose the order so that it is not from newest to oldest, but as the photos were taken.
The order could be based on the order of photos in the album, but currently it is not possible to set an order other than newest to oldest in albums, which is usually the opposite of what is desired.