AFAIK, there's no plan to implement this.

You could however, make the modifications and submit them to PG to include on the site instead of waiting for someone else to do it. You'll need to download Arc (http://arclanguage.org/) -- the code which runs HN is a tweaked version of 'news.arc'.

There's also an Arc fork on GitHub: https://github.com/nex3/arc

Up-to-date directions for setting up Arc can be found on the Arc wiki: https://sites.google.com/site/arclanguagewiki/