Hi Michael.
I and Vic started to build a little python program some time ago, to create graphs of this type for the CI.
Here you can see a first draft :
http://ukratio.org/Algosphere/selector.php
The actual program is here :
https://github.com/algosphere/algosphere-graphJCL, I am unsure creating one in 3D would really be useful, actually I think it would make it harder to navigate. (but it would also probably be more fun).
The things which stopped the project were :
- It was somewhat difficult to create and maintain graphs with a clear and logical structure.
- We wanted to create something better and integrated with the site, and the site was in reconstruction.
- There were finally other priorities at the time, and like JCL say, the ability to search is actually more useful (and I think this need some improvements too).