On ZE many people know about the few who like to play as a zombie, so they get infected. This caused controversy. I'm not completely sure this is possible, but maybe a you can make a menu that allows you to select the option if you want to be a starting zombie or not. This would make the people who want to be a zombie a zombie, without increasing the starting amount to an obnoxious level. Again, I am not sure if this is entirely possible but if it can be done I think it would solve problems between people. Feel free to add on to the idea if you want.