Sometimes I KO people. Sometimes I want to kill them. Other times I just don't want them around. Sometimes my friends get KO'd. Give me the option to send a KO'd player back home by right clicking on them and selecting it from the flower menu. If they don't have a hearthfire then it either won't work or they'll be teleported into the wilderness. Either is fine.
Block it if they have the red handed debuff to prevent abuse.