I'd be inclined to have Nkosi over Mapimpi but there's no way any of those guys are costing SA a world cup. Faf de Klerk is world class.
I had to check to see if there was another Faf in the squad when I read that.
We relied incredibly heavily on both de Klerk and le Roux in 2018, as both players were at the top of their game. This year however has been very different. Faf's performance against NZ was the worst I have ever seen him play, and Willie seems to have forgotten how to play rugby, which has happened before.
Faf's delivery is slow, he takes steps before passing, and his box kicking at the moment has to be the worst of any 9 in World Rugby. They are 2 players who, on their day, can easily be among the best in the world, but unfortunately, at the moment, at a world cup (and in the RC), they have been abysmal. These 2 players alone gave away 14 points in our first game. A try from an attrocious Faf pass for NZ, and a butchered try from an equally bad pass from Le Roux to Kolbe.
Obviously I hope they both come right, because when they are on song we are very hard to beat with the pack we have being so good. Unfortunately form dips as massive as theirs tends to take a while to fix. We have a history of players playing on reputation and letting us down (J de Villiers/Victor Matfield in 2015, Bryan Habana/John Smit in 2011).
Mapimpi is all gas. His positional play is extremely bad, and he doesn't know how to defend cross kicks, and is generally very bad in the air. He just isn't good enough at this level yet.