Beyond the aggregate, distributional effects in economic outcomes is now a key theme in macro modelling (Moll, 2017). Issues like the distribution of income, wealth and debt are increasingly discussed in central banking circles. It is important that we understand how different shocks and policy choices affect different groups in society, and how these differences influence aggregate outcomes (Ampudia et al, 2018).
And this is possible now, precisely because of the advent of better data like the Household Finance and Consumption Survey. Not only does it bring macro theory more into line with reality, but it also allows for differences in behaviour across the income and wealth distributions to be better reflected in the models.