Moods and character upgrade

My rating used to be a 5 but I am starting to become Irritated by the moods. I once killed someone when we were low on food and supplies. Why cant the characters change their mentality to know that If they have to kill they have to. Also can to have It to the point you can upgrade characters by like backpack space, strength, mental strength, etc. Thanks hopes this comes In the next update.

Lplath22 about This War of Mine, v1.3.10