Visualize links to related content as a network graph
Wikiwand already has a feature that lets you see some related pages connected to the current article you're reading.
This feature can be upgraded to a network graph like those found in some PKM applications, such as Obsidian.md, Roam Research, Logseq, and so on.
I'm not a web developer, but it seems like something like D3.js could be used to make it.
For a quick understanding of the concept, just visit this website: https://www.sixdegreesofwikipedia.com/
From the famous polymaths Aristotle and Leonardo da Vinci to modern scientists such as Richard Feynman and Albert-László Barabási, they have taught us that 'everything is connected!'.
Fernando Fontana commented
To be more specific, I'm suggesting to embed visualization of a local graph in the article page, as this example: https://imgur.com/a/7lJRN0Y
Not the whole Wikipedia graph, due to its enormous size and complexity.