On a lot of sites, like Reddit for example, on a long scrolled page I can look back at the URL window to remind myself what the context of the page is supposed to be about.

On HN, get way down the page with many comments and look up at the URL window and see just https://news.ycombinator.com/item?id=12345678.

It would be nice to see something like https://news.ycombinator.com/item?id=12345678-story-title-here.