"Shinji's a whiner yack yack yack"
Didn't analysed it trough now, But I could say that my oppinion are almost the same as you.
Can't even say where I diverge from your though, but maybe when the story will be fresh in memory, I'll be in mesure to argument about.
Also I want to tell you that this analyse is really great. Least than you, I am the only one in my "gang" to have see the serie. So can't not even discuss about with other people, and My english su*k...