Perhaps the most that can be hoped is that the prospective players in the unfolding drama - the central bank, the Treasury, supervisory bodies and deposit insurance agencies - know each other well and have well-established lines of communications, so that decisions affecting all can be speedily agreed upon.
At a moment of crisis, the time allowed for decision-making is not likely to be great. Moreover, as we have seen in South Asia, the failure of domestic policy-makers to take credible policy actions quickly (particularly if these policies have been prescribed in the context of an IMF programme) can result in the market imposing heavy penalties.