Just for some disection sake, you must have reasons for your choices.
1. Why Beast, he hasn't played anything much so far, and we don't have a real indication of his form, I would gladly go for him If i knew the form he was in. So I would rather then go with If selection policy allows i would go for guthro due to the fact that he is matchfit, The pick is for this time of the season, Beast might be matchfit by the time the tests comethough and he plays in South Africa currently. I am not so sure that i'll pick Kitshoff yet as he is only 20 and picking a prop at 20 for a bok team is risky for his career. let him mature first.
4. Etzebeth is the beast i agree, but again, a tight forward, i won't make h9im first choice yet, i'll go with Flippie still Etzebeth will have a long career again give him some time to mature. He is a lock though and it's not as hard on them as a prop so i would play him off the bench.
8 I won't go for Alberts at 8 I believe spies has done enough this season to turn it around, as I have said previously he has been impressive enough and is not flinching from the physical stuff. This opens space on the bench thought between alberts and Coetzee. You can move Schalkl to 8 if spies gets hurt. I would go for Coetzee purely because of his tackle rate. Kolisis is good, but i agree not as impressive as Coetzee.
2. I would not pick Strauss above Chilliboy.
9. I understand your need to pick a versatile player, however I think Pienaar will be off the pace. I'd pick another scrummie. Maybe Sarel Pretorius, could have some valuable input froma strategic point as he plays in OZ, knows the players etc. thinking towards the Rugby Championship and is probably our best or second best scrummie.
13. Jean maybe good idea to shift him out. However the way that JP has been playing at outside centre he might be an option as well.
14. If you play JP at 13 then you need Aplon. People complain about his size, but the guy has more hart than 300 Spartans combined. I would pick him for that and his unpredictability, bar that. Willie le Roux. for his versatility, he can play both wing and fullback, he has even played Flyhalf for boland.
15. I understand the need for long term option. However Lambie does not play fullback at this stage, and would need a game or two to adjust, we don't have that comfort against England. I'd go for Viljoen. Lambie to be in the squad though as replacement on the bench.
Another thought: As replacement to Danie Roussouw, we might need a versatile Lock that can play 7 or 8 a possible candidate maybe Rynhardt Elstadt. Well Alberts as well, but Elstadt has him on length. Just a thought.
Just some thoughts , not saying that is what i'll do, just trying to broaden the choices. All will depend however on the game that Heynecke wants to play and which players he believes will do what he asks. and can combine well. Combinations are the key to sucess here, no use in picking a genius that doesn't combine well with another genius.