My views on the coaching issues are much the same as those on management level antics.
Get the process right and the right people and results will follow.
Cheika was handed the job on the back of Link's resignation, and a single title at the Tahs. As QH has said ideally he should have had a few more years at the Tahs, but then I don't think it would have made a difference, as I've said before it is very possible that Cheika is a motivator type and that achieves rapid results in a short time, which is what we saw at the Tahs and the Walabies. But there has proved no depth to either of the "structure" that he ran and both have fallen in a heap after that initial success and can realistically be said to have worse results now that at the start of his tenure.
No a big factor in this I think is the key fact that where ever he has gone he has surrounded himself with inexperienced coaches (much like Robbie Deans in fact) with the only outlier being Byrne. Is it any wonder that the results achieved at the very pinnacle of the sport against very well coached sides is so erratic at best? Out of all the coaches "specialty" areas the only successful individual was Mario Ladesma. The scrum was very poor to shambolic under Deans (and those before him) and this has largely been fixed with some blips on the radar attributable to selection, long term injury/rehab issues (to the likes of Slipper) and IMO the loss of Holmes as back-up or even first choice THP with Kepu. That is a pretty damning result from the coaching team. The fact that the attack is still pretty poor, direct big runners League style into defenders with only occasional play in depth. Defence systems since the RWC have been a complete mess.
So the lack of systems depth is being played out, we have novice coaches in most positions, all in fact excepting Byrne, now with Palmer on board, and the motivator is less motivating and more ranting and raving like a child.
It is not about belief as much as Cheika and Co like to sprout, it is in fact about lack of skill execution and that comes directly from lack of effective coaching and I've no doubt player coachablity in some cases.