Well, I didn't really consider this done as it was just a 2-minute hack from this thread:
https://vborg.vbsupport.ru/showthread.php?t=190459
I am busy with a new release of my commercial product but I will try to finish the code needed to add permissions around the link so that the image and link to post is only shown if the user is really allowed to post OR if they forum is open to posts.
It may be quite some time however if someone else want's to do it...