Hide Pages on Sitemap by editing the Page

I love your product. I know how to add the post IDs of any pages I want to hide in the Settings. I have learned that we often create special pages that we want to hide, but we forget to do this. It would extremely helpful to have a checkbox (or some flag) ON a Page that we can enable to Hide so it auto adds that Post ID (that way we don’t have to go to your settings as a second step). Is that possible?