Add a decent photowebpart
Add a photowebpart that shows the content of a picture library in thumbnails. when you click a thumbnail, a popup will appear with the photo in a "normal size" (as available in _w hidden folder) and than you can browse the photos with next/previous buttons, with an option To show the picture in original size.
We are currently working on an Image gallery web part that would meet those requirements.
Star D. commented
Ability to rotate photo too, as EXIF data is usually ignored on upload in SPO.
Martin Pětvalský commented
And allow us to browse (not just type) not only Image Library as a source but also Document library and just from the root of it but allow us to pick any folder in them. I worked with this lately and it's such a pain in SP 2013.
Peter England commented
And also an associated web part for carousel or other styles would be great.