I have to start with a disclaimer: I have never met Joan Baez or seen her perform live. I can't judge her as a human being, only as a recorded voice. IMHO what we have here is a great voice but not a great singer. And I've tried to like her (Dylan, and the movement and all that...) Maybe I can't forgive her for "The Night They Drove Old Dixie Down". It lacked subtlety. And the words were wrong. I think her voice is beautifully suited to traditional balladry, but I hear very little soul. And so often when I have heard her on the radio or record, she seemed to be doing a "reading" of a song, if you know what I mean.
I would probably go to see her if I had the chance because she has all that history (who wouldn't kill to have that resume?)and she certainly knows talent when she sees it. I'm certain her band would be great. I would also go in the hope that she would prove me wrong. Tastes change, after all. But for me she would have to be an acquired one.