Even if you post a more informative title, the mods of HN will change it back to the original site title. It has happened countless times and is pretty much the

Even if you post a more informative title, the mods of HN will change it back to the original site title. It has happened countless times and is pretty much the site policy. The claim is that is prevents posters from making click-bait titles to gain karma, although in this case the original is the click bait. So anyway, no, you did the only thing you could do. Anything else would have been degraded to the current information value by mods anyway.