@manton this is really cool, makes me want to upgrade so I can use it.
One cool way to expose it would be for theming - perhaps some themes could offer an automatic archive link. Not appropriate for all blogs and not by default, but available.
Something I did recently was make a shrine to privacy on the web, and I used a Hugo shirt code to provide links to .onion domains alongside clear text sites. That implementation is really just a prototype and has lots of room for improvement, but something similar might be nice for some blogs to automatically show the archive alongside the live link.