It looks like there's finally a real alternative out there – albeit a rather expensive one. But it just might be worth it.Why? Because we're skeptical that such an example exists. And when there isn't such an example, the necessity of iTunes' many features, catering to all, is perfectly clear.
Roon appears to be superior to iTunes in pretty much every way imaginable, including excellent support for classical music metadata. It's everything that iTunes should have been turning into over the years.