The impression I got from Cheika before the tour was that all assistant positions were open, with him even looking to a possible "Super unity ticket" at first, and Blades ending up staying on - in part to provide some changeover continuity. I dunno if that means he now has longer-term tenure.
I think the initial invitation to Foley and Larkham was a bit of an olive branch and an acknowledgement that he had a very tall order in front of him.
One of the existing Wallabies assistant coaches was always likely to stay. It's generally the way things are done to retain some continuity. With the Waratahs having no specialist forwards coach (Cheika took that role), it meant it had to be Blades remaining on.
I absolutely accept that it would be ideal for Cheika not to be coaching the Tahs and Wallabies in 2015 but that's the way things are. Clearly the last few months in Australian rugby have been far from ideal and we're left in the position we're currently in.
I think there are a great deal of mixed messages in what Scott wrote, largely about the scrum problem. How will Cheika improve the scrum by not coaching the Waratahs? I believe he is trying to organise some short catchups with the Wallaby players during the year but until the squad is assembled for the Rugby Championship, it is presumably pretty hard to practice scrummaging. I'm unsure how not coaching the Waratahs in the preceding months will assist that.
I'm sure Cheika will put some more time into scrummaging at the Tahs this year in the knowledge that it could help the Wallabies at the RWC. He's got Kepu, TPN and Hooper who will be at the RWC if healthy as well as Skelton, Palu and Robinson who have pretty strong chances of making the squad. Cheika isn't a renowned scrum coach though so just him focusing more on it isn't going to solve the problem.
Now it would seem ideal if Michael Foley puts his hand up and said that from July, his Super Rugby year is over and he's happy to help the Wallabies. He could be there from day 1 of the squad assembling right through to our last game in the RWC. That assistance would surely be invaluable.
Our scrummaging problem goes beyond the front row. 2015 would seem the ideal time for people like John Eales as a board member of the ARU to offer his assistance. Surely he can provide some valuable advice to our locks on scrummaging (and Hooper and others on captaincy).