Since many of these procedures are implemented in hardware directly, maybe it could be utilized as a conditional fall-back? An example might be a MITM attack that indicates an invalid hand shake or shows that an insufficient random pool is detected so it would attempt to connect using each alternative in order till it gets to the weak link. Technically speaking this would be ideal since the government and ISP's that carry these messages are so intertwined that the breadth would cover every citizen in their own country and likely many others.