We'll create fresh WordPress site with Featured Image Admin Thumb installed. You have 20 minutes to test the plugin after that site we'll be deleted.
When active this plugin adds a column to the All Posts/All Pages and where supported the All Custom Post Type admin views. This column, “Thumb”, will display a thumbnail of the featured image
or post thumbnail so you can easily determine the content that is missing an image.
You can also make inline edits that allow you to change the thumb/image from the All Posts/All Pages/All Custom Post Type view without having to edit the post.
Now the plugin is translatable. Using tools such as Poedit along with localized / international versions of WordPress, FIAT can display user supplied translations of its text.