Von Braun would be far too controversial. There are at least some allegations that he might have been a somewhat more enthusiastic member of the Nazi Party than he claimed.
Others claim von Braun engaged in brutal treatment or approved of it. Guy Morand, a French resistance fighter who was a prisoner in Dora, testified in 1995 that after an apparent sabotage attempt that von Braun ordered a prisoner to be flogged, while Robert Cazabonne, another French prisoner claimed von Braun stood by as prisoners were hanged by chains suspended by cranes. However, these accounts may have been a case of mistaken identity.
Proof exists however that von Braun himself went to KZ Buchenwald to pick slave laborers (letter to Albin Sawatzki dated August 15, 1944)[citation needed]. Former inmate Adam Cabala reported: "[...] also the German scientists led by Prof. Wernher von Braun were aware of everything daily. As they went along the corridors, they saw the exhaustion of the inmates, their arduous work and their pain. Not one single time did Prof. Wernher von Braun protest against this cruelty and bestiality during his frequent stays at Dora. Even the aspect of corpses did not touch him: On a small area near the ambulance shed, inmates tortured to death by slave labor and the terror of the overseers were piling up daily. [...] But Prof. Wernher von Braun passed them so close that he was almost touching the corpses."
Wernher von Braun
I think the jury is still out on whether or not he may have willingly participated in war crimes, but even the possibility that he may have...makes him radioactive. Bioware would be foolish quite frankly, to name something after him in the game. There are plenty of safer names from the history of space exploration to draw from.