Really the title says it, an AI that is meant to be as level as possible and uses the yaw function more often. Perhaps an air AI that simply utilizes yaw at all. Other than that, maybe a car AI that has a primary to stay level? Maybe even different AI-s one that goes in a straight line through a goal, one that will avoid the ground at all costs (within a set distance), one that's more passive with getting to the objective, things like that maybe?