Possibly scriptable, but a work around would be to extract the desired pages (Tools> Organize pages>Extract), then export them as images, or use a preflight profile to convert the page content to images.
Unfortunately, a script can't know which pages you've selected. You have to indicate them to it using a marker of some kind (bookmark, comment, etc.) or by entering the page numbers into a prompt dialog.
Not directly, but you can drag them to a folder to create a file with just those pages, and then export that file to an image format, which will generate a separate image file for each page in it.