Is there a possibility to post as an image with the link of the post in the description of the image?
At present the featured images are always displayed thumbnail size on Facebook and Facebook will not increase their size even when you highlight the post. If the post was a picture type where the featured image was uploaded to Facebook along with the post link and short excerpt you could show a large image.
In an image-centric society such a post would work better, me thinks.
Thanks for listening?