I think this will eventually make it into the app. There are lots of requests and bugs to fix so it can take some time for specific things to be added. But I've had features added, as well as bugs fixed, without a reply from the dev. Sometimes they even forget to mention it in the update notes or sticky post.
Another feature that would enable similar functionality would be a comment navigator bar with a setting to jump to new comments. Joey for Reddit had this, and I loved it.