Well I don't pretend to have any ability to read Isaiah's mind either of course and I don't question what the Lord puts on somebody's heart for contemplation. But for me I just don't see a Jesus of Nazareth in the prophecies and I don't think Isaiah saw Jesus either mostly because of the tremendous regard in which he was held well into the First Century. I am relatively certain that a Prince of Peace was the great leader who would restore Judah to glory through defeat of their enemies and I don't think he had any concept of a Messiah God in the sense that Jesus was.
The reason is that the Pharisees were the conservative fundamentalists of First Century Judaism and they knew their scriptures frontwards, backwards, and sideways and could probably recite Isaiah from memory. And yet they were unable to recognize Jesus and they crucified him for claiming to be God, something that was blasphemous for ANY man to say no matter who he was.
I am not at all questioning the prophecies themselves. I am only questioning the understanding of what they meant prior to the actual events unfolding. After the events unfolded, it would be much easier to again read the text and say "aha! Yes!"
Do I have it all figured out? I have no way of knowing until I can meet Isaiah face to face and ask him myself.