So it seems a common opinion is that it is not known what Library Explorer is supposed to be.
Somehow yes. But on the other hand I use the LE very often.. intuitive.. somehow..
Hm, maybe it's helpful to think about how people possibly use the LE.
I, for instance, use it mostly for reducing the library to a subset which matches a certain tag or tag groups. Most of the time that tag is <Genre> but I also use <Decade> pretty much. In contrast, if I wanna go to a certain artist I personally prefer the search box on top of the main panel.
And now.. while I'm writing this, I found an amazing feature I didn't know. You can just start typing in the LE and a search box appears! I'm amazed, I always wished there was a search box
Sorry, but that changes everything for me now. I have to think over a bit...