Please keep in mind that people differ. Visual tools like
what you intend are virtually useless to me since I am not
very visually oriented. I far prefer the richness of text.
Not only does a visual metaphor not help me much, but I have
trouble providing visual metaphors that help others. That
isn't how my brain works.
Two essays on this theme of possible interest. First of
as literature which explains one of the fundamental
philosophical differences between Unix and most other
operating systems. And then secondly Neal Stephenson's,
The Beginning Was The Command Line. I won't try to
describe it other than to say it is long.
Some background. Both essays are from when Microsoft's
monopoly still looked invincible and the idea of Linux as
a serious competitor looked to most people who heard about
it like a sad joke.