In a statement released before the CAA announcement, the British Air Display Association said: "It is certainly not a time for uninformed or mis-informed rule making, especially when the existing rules have worked so well for so long." (from The Independant)

The trouble is if you don't do something unless the assessed risk of an accident with fatalities in the general public is, say, less than 1 in 200 years, then having an accident shows that your risk assessment methodology may be wrong. Or that your risk assessment may be correct but the public find the accepted risk too great.