I wonder what it would take to implement automated linking of pages? With a function that parsed all pages, and replaced text matching the title of any other page with a link to that page, a Hugo site could immediately gain some of the power of a wiki.
It could either be applied at the point of rendering the site, or (optionally) actually re-write the sources to include the links permanently.
I guess this might be difficult to achieve with an acceptable level of performance for a large number of pages, but perhaps with the raw speed of a Golang-based system like Hugo…?