currently the media/image items shows a menu while hovering an item. atually that menu is quite large and hides the whole media preview underneath it. (see screenshot)
additionally the most common use case of rearranging items gets difficult because most of the draggable zone is covered by the menu. and on top of that, when a user unintentionally clicks the menu while he wanted to initialize a dragging action, he could hit the “remove” menu item.
my suggestion would be the following: either let the user confirm, that he wants to remove the media/image item. or even better, add a “remove” icon to remove the item and put the “Edit metadata” below the caption (see mockup).