The angel Gabriel said, Hail, full of grace, the Lord is with you (Luke 1:28). The phrase full of grace
I do not know why a believer would be required to imitate the angel who called to Mary, Hail Mary: which seems to me to be a form of greeting, I could just as easy say Hi or Hello.
And the argument I make is that Jesus was the blessing that Mary received, she did not bare Jesus because she was blessed but was blessed in baring Jesus.
I also believe Mary was an innocent child and I believe she stayed as innocent as any human being can the rest of her life and that Jesus was her only Child.
I am fine with what you say. I do think that it makes a beautiful Scriptural-based prayer though. Whenever I say the Hail Mary prayer, it reminds me of the great Salvation Plan of God that we are so blessed with. It reminds me of the old Eve, who sinned and the New Eve, who was obedient. What a fantastic God we have!