Do we want to decide what to do as far as having 'bad guys'?  A rival tribe perhaps? I was thinking that a good plot would be that they kidnap Mae to marry her to their chief's son, that way our tribe would have to surrender to them to get her back.. Just a thought, sounded like it could be fun times. It doesn't have to come until a little later, but just an idea. Also, if we have 2 tribes, it would be easier to name them, so to keep track of who you're talking about.