I don't see how the library management is terrible, I have no problem what so ever managing my library (about 10,000 songs). I can get to anything I'm interested in listening to in a second or two without a problem. MediaMonkey, VLC, Winamp, Windows Media Player, Foobar etc. None are really better or worse for media management really, they are all easy to use as soon as you are familiar with using them.
You can't even remove anything from your library without making the files hidden or removing them from the directory they're in.
I haven't seen any screenshots of it where it's set up in the way I want it to be either. But I'm not even going to bother with that when I can't even manage which individual files I want to appear in my library, that's a dealbreaker for me.