(Edited for slight spelling errors)
What a game, I most definitely will go back and see how everything else plays out because I'm curious about that. For my first play through however, I managed to obtain the Terra Zero Sum (#7) for my ending.
I regrettably killed many life forms over my play through until I realized non-lethal was the way to go, but I think I made up for it. I'm definitely going to try for Proven Pacifist for NG+
I do have some nags but they're mostly unimportant, one of which is the romance option with Rivers and how you never see her again after she gets carted away when you and Shay go to visit the ship. But, I understand if it was just a small side quest.
Anyhow, I'm not sure how good "Heart of Humanity" is but it sounds like a pretty dope title. Overall, a solid 9/10 experience. 