Regarding having Cecchin as ref - I don't think it matters whatsoever. There's no such thing as objectivity anyway - a French or Kiwi or wherever ref is gonna have bias no matter what. A Kiwi ref, for example, might enjoy seeing England beat Australia, and a French ref might enjoy seeing Australia pound Ole Blighty - it comes down to the individual.
Maybe deep down Cecchin wants England to win? Half the Australian side have no doubt been giving him grief back in the NRL for years, and this could be a chance to get them back for being so mean? Maybe he's sick of Watmough pointing, yelling and complaining after another knock-on, or Smith raising both his arms and protesting after another grubby tackle? Maybe he is SICK TO DEATH OF THOSE RUDE LITTLE BASTARDS!!!
The more I think about it, the more I think having an NRL ref benefits England.