An interesting concept, for programmers it would be great, if they supported something along the lines of 1996s "Software Visualization in the Large", by Thomas Ball and Stephen Eick [1]. I did something like that (i.e., marrying the visualization with a file management metaphor) quite a while back in Eclipse, but never got around to maintain it. Too bad, because I kind of liked it. (And it was different from AspectBrowser, too.)

[1]: http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.89....