Along the lines of https://www.npmjs.com/package/anchor-js , I'd love to see Mediawiki section headers have a link (e.g., which showed up on hover over the section header) which would resolve to that heading, and allow one to bookmark or share the URL with the anchor added within it.

While there are browser add-ons (e.g., my own https://addons.mozilla.org/en-US/firefox/addon/jump-to-anchor/ ) that let people get the anchor link without digging into the source code, it would be very convenient for the average user who doesn't know about these add-ons to be able to get at this info and lead people to the precise section of interest.