I think Godzilla should have a human quality to an extent. It's that sense of humanity that makes him an identifiable character that audiences connect with, even when he's the villain of the piece. In the films, he's not just a rampaging animal, but has intelligence, cunning, and determination that let him prevail over all obstacles.
I agree with what you're saying. I hope that is conveyed in the movie. How far upright fo you think he should be?