There's a story in today's, 4 June, Sun Herald (not online however) about Stephen Larkham being the essential player in the Wallabies RWC campaign. This is one of the reasons I can't see them winning in 2007. Larkham is a brilliant player, easily one of the best first five-eighths in the world, however he is injury prone and the Wallabies don't have adequate cover.
Mat Rogers is not playing enough rugby in the number 10 jersey
Sam Norton-Knight is a good player but can't command a starting spot in the Waratahs.
Contrast this situation with the All Blacks who will be able to call on Carter, Luke McAlister and Nick Evans, all of whom are first choice five eighth for the respective teams and all of whom have been and will be playing in position in the lead up to the competition.