Heyneke's choices puzzling

The Springboks will always have a formidable team running on the field. Why though, does HM continue to snub guys in prolific form such as De Jongh (who is by far the best centre in SA presently and has experience), Aplon (who has proven to be a match winner for Stormers. He has NO weaknesses either than that he is small. Kirchner is no match for this young fullback, so is Taute) and Mvovo (he needs to be given a fair and prolonged run at wing. He has excelled there but continues to play second fiddle to a scrumhalf). Where/how does HM find 7 springboks at the Blue Bulls? They have not performed at all in any competition this season. Well done Lambie for playing yourself into the team and forcing yourself in there!