See the title. I think it has value and could be an easy implementation.
It looks like the CAI is focused on media (image/audio/video) right now - can you expand on how you expect Ghost to support it?
Sure, I got the inspiration from Drupal which enabled CA with a plugin. Ghost would need to keep track of CA metadata in the pictures’ database (it has to be stripped off during pictures upload) and then it could be toggled in the admin panel.
Looking at the example from the Adobe blog, it might look like this.