"The Mans" music, playing, and contribution to the greatful dead has meant so much to me that I would have no interest looking at the last years of his life from this perspective. I think he gave all he had to give ! I could not ask anyone of anymore.
That being said, I am amazed at the progress John (in my humble subjective opinion) has made in the last year. I feel that Bob and Phil have nurtured him along and are now developing a monster of an artist. I reflect and realize now, how very importantant Phil and Bob were to Jerry's mastery. They were the canvas, frame and broad stokes which enabled him to apply the detail. Without any one of the big three, I don't believe we would have had anything close to the masterpiece that we call the Grateful Dead.
This music has been woven into the fabric of my soul since the moment I heard it. No time to speculate, I'm gonna go for it for sure.