We have to beware that we don't include "behavioral economics" and exclude psychology, philosophy, and anthropology. Much of what is called behavioral economics is the study of human behavior within a certain system, which is the very system that is up for re-design. How about medical sociology? Public health? Rather than the behavioral economic question of, "Why is human behavior so irrationally unpredictable while I'm trying to standardize and predict my economic investments?" We can ask, "What do humans need, and by meeting those needs, do we optimize behavior by optimizing the experience of life?"