User:Quiddity/Tree of knowledge

I would love to get a visualization of the entire Tree of Knowledge

I.e. Use Wikidata to generate a cross between
- The simple/classic tree of knowledge, or a game skill tree
- The complex wikigalaxy
  - Using Wikigalaxy's thematic clustering system, but Wikidata's complete corpus.

Adding optional layers, that highlight areas which:

I’ve edited. (automatic)
I've watchlisted. (automatic)
I'm an expert in. (manual)
I want to read. (manual)
and other more rigid ontologies, E.g.
- The curriculum of [Country's] 12th grade high-school science class.
- The articles relevant to a biochemistry bachelor’s degree.
- etc

To elaborate

I adore maps and infographics. Anything from software maps:

To page-navigation maps, e.g. Wikimedia/MediaWiki:

I'd like more maps, for our content.

But I want additional filters / overlays / highlights.

As an editor who is active in WikiProject Antarctica, I'd like to be able to visualize all its articles (w:en:Wikipedia:WikiProject_Antarctica#Articles), and also...

to highlight the articles I've edited
to highlight the articles I've created
to highlight the articles I have/have not watchlisted
to highlight the articles that are new (last n days)
to highlight the articles in relation to all n million articles. (wikigalaxy-style)
to see the clusterings given by categories, and category-intersections
to see the clusterings given by navboxes
to highlight the articles by their "importance-rating" and "quality-rating"
etc

These would help me to:

detect some of the patterns of how biographies / geographies / etc are prioritized, or missing
deepen our understanding of how much there is to know
to compare my own highlights, to the highlights of my friends and peers
- (I imagine professors comparing their maps... "Ooo, what's the node over there? I haven't seen an Antarctica highlight in the veterinary science region before!")
share memetic ideas
feel more connected
want to return to the sites, to improve and expand my understanding of it all, and improve the articles

wikigalaxy itself is restricted to 100,000 topics, and developers all twitched when I asked about making even that limited extent, both live, and directly integrated to the site, even just for all logged-in editors, let alone IPs/readers.
I understand a lot of this will/would need to wait for more structured data, and a lot of it is currently unfeasible because of the massive software/server requirements. But it remains one of my long-term dreams.
There have been various attempts over the years, to do something slightly like this with wikitext, e.g. w:en:Portal:Contents/Outlines.
I'm Finally putting these old notes onwiki, after seeing Wikimedia User Interface/Concepts/Explorer. :-)
See also: m:Grants:Project/Arc.heolo.gy
Related browser extension: Wiki Journey