I question whether it's wise to make new rules during a financial crisis.

But unstable betting markets may be shouting out for new rules in a crisis. We don't know in what direction the betting markets will be compromised.

I'm also less convinced that we can plan, ahead of time, for the best ways of getting through all crises that affect the financial markets. Stupid example: a foreign attack triggers a stockmarket sell off. Doing nothing is not the correct thing to do - but what is? What if it's a misfired nuke from a future somewhat-reformed and apologising North Korea - now complicated decision have to be taken, highly dependent on the exact situation. We can't plan for these situations, so if we can't use the betting markets reliably, we need to preserve some other decision making skills.