I don't think it would have worked, but it would have explained why Harrison actually seemed to care about his 'crew'. The Khan I am familiar with cares nothing about anyone but himself (Well, maybe Joachim. But that's it.
) That's one of the things I didn't "get" about the film - it actually made Khan care about people. His appearance in TOS made it clear that Khan cares nothing for anyone other than Khan. (Don't believe me? Look how he treated Marla McGivers.) Soran, for his part, would not have had this problem. But Khan would, since he was an Augment, and it's pretty much built-in that Augments have no compassion.