Those players have to show the ability to perform at a higher level — taking on the Springboks at Ellis Park — and I think there's enough internal pressure for them to do so.
With Waisake Naholo breaking his leg, there's now a chance for another winger to stand up. And as that injury showed, the All Blacks will want as much back up as they can get across every position.
Against Argentina, the scrum seemed to perform reasonably well when Keven Mealamu and Tony Woodcock were out there, then Codie Taylor and Nepo Laulala proved capable.
Taylor, particularly, took the bull by the horns and he now has a real chance to put his hand up for a World Cup place, especially with Hika Elliot not travelling to South Africa.
He's still only young but I can also see Laulala putting a lot of pressure on Owen Franks, while Wyatt Crockett could be worthy of a start over Woodcock on the other side of the scrum.
There are those sort of selection issues throughout the fringes of the squad. Luke Romano certainly had a strong game against Argentina but will James Broadhurst get a start soon to see if he can be the third lock?
The veteran loose forwards are getting better by the game but Sam Cane has yet to be seen and he must be itching for a run after such a strong Super Rugby season.
That type of squad rotation will be important with so few tests before the World Cup, which was obvious in the decision to leave behind Dan Carter and Sonny Bill Williams.
It's been done before and it just creates opportunities for other individuals to perform. I think we'll see that next weekend and then the two games against Australia.