Having a richer set of granular data can help internalize the impact of monetary policy actions on wealth distribution and ultimately lead to a more precise modelling of the transmission mechanism. A much longer line of research looks at the impact of wealth or credit constraints on the behavior of households and thus on the transmission mechanism.
For financial regulators, it was an out-of-syllabus situation as the economic stress this time was not caused by underlying economic imbalances or financial market failures, but by a public health crisis. This made it a unique shock, as it impacted both the supply and demand sides of the economy, affecting both production and consumption.