Import "Featured Image"
we were using the old "non extbase" extension and just upgraded to the new one. In the old version, the "featured image" in Wordpress was also displayed in typo3, but now the plugins behavior was changed to only parse the posts content for the first image.
I wrote a patch to select the featured image from the wordpress database as well and use this one if it is present. If no featured image was selecend in Wordpress, the current behavor (parsing post content) is preserved.