Hi skyman,
I don't agree with all the conclusions you drew but you do show that the scriptures don't support the WTS stringent interpretation to 'abstain from blood.' I ran across the scripture in Leviticus a few months back and that really opened my eyes. It's also powerful to think about the principle of the sanctity of life and what that really means, as you mentioned.
Even though I'm still a nominal JW, I had already decided that I would accept blood for myself and my daughter if there were no alternatives, and just deal with the WT consequences. Another one of the good things about being a nobody in the congregation is that no JWs would be visiting me in the hospital anyways to see my commission of this sin. I'd just have to figure out a way to keep the JW family away.