It really worries me that Cheika has said that prior to the game against the Boks he'll be naming either Hooper or Moore as RWC Captain, for several reasons.
1. I think the recent poll taken on this website suggests that most fans believe that Hooper should not be captain. Cheika would be blind to public opinion, and the obvious, if he named Hooper ahead of Moore.
2. It suggests to me that he plans on starting Hooper in every major game this year. That's not necessarily a right or wrong call, but I think that even the biggest Hooper fan would concede that Pocock could prove to be a better option for the wallabies at 7. It would be a very stubborn approach to decide, before any test match rugby is played, that Hooper will be the backbone of the Backrow, and Pocock will only play a supporting role.
Cheika obviously has an idea of how he wants to play and what personnel he needs to play that game, which is fine, but he needs to remain flexible. If he names Hooper captain and TRC is a major failure, he'll have backed himself into a corner.