One of the first wow-moments when I first installed linux (2003ish) was Enlightenment. I though it was very pretty, and quite different from the mainstream WMs. It was presented as a feature, not a bug, that development was slow: the people behind it wanted to take the time it took to get it right.
So I waited. I always installed it on new computers, but it never seemed quite ready to use.
I did the same today, and the feeling is the same as in 2003: it’s not quite there yet.
Hence the question: does anyone actually use it as their everyday WM?
That 3D file system browser (I presume you’re talking about Jurassic Park) was totally real.
It was a tech demo that SGI included with IRIX called “fsn”. Ironically, at the time, many people criticised it for being unrealistic. There is an open source clone called “fsv”.