The map is interesting. I'd prefer to have something more like a geography map but I like the multiple dimensions of your picture. We'll talk about that at our next meeting. I've made a card for it in our Kanban.
That said, we really need more articles, not more organization of the three GASPs that we have. It's questionable whether we should invest in organization when we have only a few articles in the area so far.
HOWEVER, what we are actually doing … I think this is actually visible or hinted at in the cards on the Kanban … is coming up with some guessed-at headings for GASPS. Things like planning, sprints, technical practices, retrospectives, and so on. We plan to make the main GASP page display those headings (those with content only, perhaps), and then within the headings, display the article headers.
And we'll talk about a two-dimensional display such as you suggest. Might be technically difficult to make it dynamic, but we'll talk about it at next week's meeting.
But really, folks. Content is what we need. Please volunteer to write something, so that concerns about organization will be more concrete.
If not now, when? -- Rabbi Hillel