Identifying info missing on some pages

Thanks for the feedback. A few notes below.

1. /photos/user/{user}/album: it would probably be best to convert this page to a view. That would make it easier for users to make changes.

On 2 and 3 it looks like the template file photos-image.html.twig can be edited to include {{ label }} but, that will make it appear on all image display modes. It might be good to include a variable to be able to check view_mode. Something like...

  <div{{ content_attributes }}>
    {% if view_mode == 'sort' %}
      {{ label }}
    {% endif %}
    {{ content }}
  </div>

Oh, I think I understand. Currently cover_id, weight, count, and data (legacy settings) are not fields, they are stored in the {photos_album} table. So they would have to be converted to the field system as needed. On this page: /admin/config/media/photos/display/sort the "Album ID" can be added to display the album title. You'll likely need some custom CSS to make it all look nice.

It would be fairly simple to include the album node / other details as a variable in the template file for now. But, then the "sort" display mode is used on both the image and album sort page, so album title might be redundant on the image sort page. We could add some more options somewhere to select custom display modes for different pages / areas of the site.

Something like this -

View modes can be added here:
/admin/structure/display-modes/view

Then add a new section on /admin/config/media/photos
DISPLAY SETTINGS
Rearrange photos page:
[select box - "sort" as default option]
Rearrange albums page:
[select box - "sort" as default option]

Similar options in the block settings / views. Maybe defaults here to keep the settings together, then an override option in the block settings since there are three different blocks, someone might want different settings for each.

Let me know if you think that might work?

A few notes:

Added photos_album_node variable to photos-image.html.twig. So {{ photos_album_node.label }} will display the album title.

Added theme suggestion hook so photos-image--sort.html.twig (photos-image--[view-mode].html.twig) will work.

Added "Display settings" on /admin/config/media/photos with options for rearrange albums page and rearrange images page - more will come later.

A quick example:
1. /admin/structure/display-modes/view "Add new Photos Image view mode" called "Sort album".
2. Enable new custom display settings: /admin/config/media/photos/display.*
3. Configure the new display: /admin/config/media/photos/display/sort_album.
4. On /admin/config/media/photos select Display settings > Rearrange albums page > "Sort album"
5. For even further customization create a new template file called "photos-image--sort_album.html.twig"

*Added a missed step.

Very cool, thanks for sharing the screenshots. Looks like it is coming together!

I think 8.x-5.x is looking pretty good so far. The testing helps a lot. No date at the moment. I need to figure out an upgrade path for image comments and test the upgrade from 8.x-4.x / migration from 7.x. Then we can release an alpha version. I'll update the module page to describe some of the new features in 8.x-5.x and maybe we'll get more testers.

If needed, you can copy the photos/templates/photos-image.html.twig file and paste it in your theme templates folder, then if it is renamed to photos-image--sort.html.twig the code can be changed for only the sort view mode for example (cache will have to be cleared for the site to see the new file).