I think this tournament is South Africa's to lose; they have to be favourites by far and its mental trying to downplay their form and dominance going into the world cup. This of course doesn't mean SA are certain to win but failing to do so would be such an underachievement. Every other team has issues or wobbles of varying degrees, SA is just plain sailing backed up by a solid foundation to build from.
This is all pre tournament though, who knows. Maybe Ireland stop choking or France use their home advantage to find their top form or a resurgent Australia benefit from Jones pulling a rabbit out of a hat? I'm looking forward to finding out.
Flyhalf is an area of concern for the Springboks imo.