When promoting from a content asset such as a blog /case study/whitepaper. The user should be able to attach a creative or image that can be promoted with the post.
This will greatly reduce the work to be done by social media team and content marketing team, as once the asset is published; it can be promoted from the same destination with the creative attached.
Currently, the functionality allows promoting the asset without any options to add images. See below screenshot for your reference.