The primary aspects of both economics and the concept of grace are balance, equilibrium and flow. Grace is the pinnacle concept of Wisdom. Wisdom, by definition, is equally relevant and equally applicable both inwardly and outwardly, both philosophically and policy wise.
Integration is the process of Wisdom itself and also the means of garnering it, and consists of the truth(s), applicabilities and workabilities of the matter at hand….but none of the untruth(s), inapplicabilities or unworkabilities of the opposing theories actually being integrated. Thus integration is a syntheisis of truth(s), applicabilities and workabilities.
All we actually need to do economically is understand all of the aspects of wisdom/grace/integration and apply them in aligned and reflective policies, and of course craft regulations that graciously yet effectively guide the individual freedom and equilibrium such policies will effect.
The fact of imperfection is irrelevant.
Modern individuals are largely unconscious of what Wisdom actually is. They think it is either pre-scientific religiosity or an equally proscribed scientism. It is actually the integration of the two. The pinnacle concept of wisdom, i.e. grace being a separate, third, additional and unifying integration/NATURAL reality is even less well understood/experienced. However, it still remains completely applicable. All it takes is the contemplation of it and the guts and good sense to act upon/implement it.