Yea a post ID would be great. If it could refer to the post ID to open up the markers without having the user go to the page directly it would be awesome.
So, let’s say in the list I have there was a special icon. When clicked that icon could change the map while the post title could still lead to the post itself. So then I could have markers in a separate column and a person could just continue to browse the locations on my list without having to go to every post page or search for the marker. Because right now there is no way for someone looking at my list to see which marker it corresponds too.