Seems a lot of survivors battle with the issue of comitting the act of murder through means of self-defense. What about including a less-than-lethal option for people? Maybe some rubber bullet ammunition or mace that provides a blinding affect on the target? Zombies would be immune to both since rubber bullets or slugs are clearly not going to harm a zombie nor will mace. The rubber bullets/slugs would simply knock the target down or out for a short time, It would be a nice option for those of us who want to avoid a serious incident from occurring between two parties when one is simply trying to go about their business without harming other survivors. It wouldn't work in every situation, but I could see it functional in more than a few.