I'm incredibly annoyed by needing to think about where my files are, at all. It shouldn't matter. All I should need to do is tell how many times I want a file replicated on my personal device network, and optionally tag it.
For some reason it never took off. ReiserFS was abandoned when Hans Reiser killed his wife but Microsoft also abandoned it with no (known) killings involved. Something must have not worked out.
It's a very interesting idea to revisit though. I do still think there's merit in it. Probably part of the issue was how to make it work gracefully with legacy apps.
However in this kind of scenario you totally absolutely want to tag it with multiple tags. Otherwise this'll become a haystack you'll never find anything back in. I bet this was another issue surrounding implementations.