@Thinker, just a few comments.
I agree you can't have a great team without a great captain. At the same time, do you honestly think John Eales would have been an effective captain against Argentina with the individuals he had around him? Eales also had good leaders like Horan, Gregan, Kearns around him for much of his time. Hooper for instance lacked anything resembling this.
With regards to Pocock, I strongly disagree people have forgotten how good he is. The longer he is out, the larger his legend grows. I just think some people have realized that a player whose biggest strength is the breakdown, who only pilfers as much ball, or a little more ball as Hooper does has limitations in what he offers all-round. People say he controls and turns the tide on games. I fail to see any indications of these moments with the exception of rare instances (RWC QF is a great example of one, but a rarity, not the norm).
I agree we may have been better served with Horwill as captain and likely wouldn't have lost anything starting him.