They have but this current group of backs simply dont get it done. Traditionally we have a dominant forward pack and a backline carried by a couple of world class players(i.e Habana and Du Preez, in 95 we had Joost and Stransky) flanked by a group of players who can at least handle their responsibilities.
Right now outside of Kolbe no one really gets it done. Faf de Klerk has subjected us to a tournament of terrible box kicking and inconsistent distribution, Pollard basically doesn't playmake at all, De Allende is an inside centre that's immune to passing the ball, Am is an error waiting to happen, Mapimpi a defensive liability and only god knows why Le roux still starts.