The owner of the contracts has too many privileges relative to standard users. The consequence is disastrous if the contract owners private key has been compromised. And, in the event the key was lost or unrecoverable, no implementation upgrades and system parameter updates will ever be possible.
For a project this grand, it increases the likelihood that the owner will be targeted by an attacker, especially given the insufficient protection on sensitive owner private keys. The concentration of privileges creates a single point of failure; and, here are some of the incidents that could possibly transpire:
Transfer ownership and mess up with all the setter functions, hijacking the entire protocol.
Consider:
