We can have multiple title images in 1st comment.

Your comment about reserving the first comment makes me think to something: maybe I should add a special "empty" comment automatically on each movie and vehicle page for additional pictures or info which are important and should be shown above the "discussion" ?

Note that it is still possible to move a comment to the top (only me can do it, it is a special page for that), but it would be easier if any admin could use that special "top" comment. Only problem is for backup of thumbnails: I only backup those posted in new comments, not those added in old comments.