Since the start of the 21st century, the architecture of the financial system has changed under the pressure of several crises. The way supervisors, central banks, regulators, and the commercial banks interact is now very different from the situation at the end of the 20th century. Many changes have been implemented as an “urgency measure” to stabilize the system, without looking at the coherence of the whole system and the occasional unintended consequences in the long run. Given that the Corona crisis will not allow us to return quickly to the architecture in line of “best practices” of last century, there should be a thorough analysis of the new “normal” and its internal coherence. Many of the existing “checks and balances” in the architecture have been eliminated for short term reasons. It is urgent to think about a financial system, adapted to the reality of today.