Personally, I am not convinced it is needed.

There was so far... about 2 "emergencies" with the blockchain (that "generate a lot of bitcoins" bug, and the doublespend in the recent fork) none of which were exploited by a real malicious party.

As far as I can tell, many major banks have a less stelar record.

It doesn't seem to me that bitcoin's "the hashiest chain wins" approach is "broken", so maybe we should refrain from "fixing" it.