A number of scholars have proposed the common factors perspective as the future direction of marriage and family therapy (MFT). Although intuitively appealing, the case for the common factors perspective is not as clear-cut as proponents portray. In its current form, the common factors perspective overlooks the multilevel nature of practice, the diversity of clients and settings, and the complexity of therapeutic change. In contrast, comprehensive process-based change models are analternative to the limitations of common factors. In this article, we consider the limitations of the common factors perspective and propose the necessary and sufficient components and processes that might comprise comprehensive, multilevel, process-based therapeutic change models in MFT.