I won't disagree with you at all there. One of the good things about McCarthy leaving is that it likely means Solari and Schotty will, too. I think McCarthy is a smart offensive coach. He sometimes gets tunnel vision, though, and fails to get the most out of certain positions.
That being said, I thought Solari did a pretty nice job with several of the younger linemen, so I don't think he's a bad teacher. I do think his and Schotty's blocking schemes aren't very good, though, although we did seem to do better when they adjusted them some ... doing more of what they should have been doing from the start.