I'll admit that I'm not a formally-trained musician apart from one Music Theory course in college. Growing up on rock and then experimental electronic, I never saw how a music score could possibly convey everything that I hear in my favorite music. There just isn't enough information on the printed page.
A picture may be worth a thousand words, but a score is only a fraction of a human musical performance. Could we agree that a musical performance is worth at least a hundred traditional scores?
I like the idea of breaking from traditional music notation - particularly because it always seemed insufficient to me - and the pieces in this thread are works of art. However, it seems that they're pretty much all hopeless at conveying what it should sound like to anyone who hasn't already heard the piece of music. In other words, an even greater amount of information must be communicated before the notated piece can be performed. Folks have already mentioned this in the thread above, so I don't think I'm saying anything new here.