In order to draw the full lessons from the previous crises, it would be important to include elements such as housing markets and mortgage finance, heterogeneous agents (borrowers versus lenders), richer flow of funds analysis and asset and liability structure, as well as to develop good theories of maturity transformation.
Consequences there were: the closing of the gold window (announced by Nixon as temporary) became permanent and was followed by a decade in which prices in the US doubled. And they almost doubled again in the following decade! So here is my lesson no. 2: surprise announcements can have long-run effects.