Thank you for your detailed description of your injury and recovery. We have all met the doctor from @#$% at some point, and at least you had the ability to find a better doc.
I am awaiting shoulder surgery, which I elected after exploring the options with the surgeon, PA and my expert PT because I decided that I cannot live with the limitations you described as it is my dominant hand and I NEED a greater range of motion.
It is so important for people to make informed decisions, as you and I did, based on their circumstances. I hope at some point medical practice will find solutions for the terrible issues nerve damage can cause.
Keep being your own best advocate!