I also would not rule out George Moala being involved in the All Black midfield,. He is a an excellent ball carrier and a very hard tackler, although his distribution skills need work. And of course you forgot SBW who will be back from Olympic Sevens duties by the time the RC starts, and he is signed to the NZRU until after the Lions tour.
I've been sadly disappointed with Georges development in MF with the Blues, I really thought Tana could work with him, seems like a match made in rugby heaven. But his tackling was so poor and at a terrible 60% at one point that he even got replaced by that English fella Piers or something.
But not all hope seems to be lost, he has been selected again, so Hansen sees something, he was listed as an outside back though, so I'm not sure what vision they have for him.