Okay, here's one - if it's been proposed already I apologize for missing it.
Cumberbatch's emphasis in his final line of the trailer is "anything you would not do for your
Harrison is a descendant of Khan Noonian Singh. The "supermen" continue to exist as a secret clan, and the information about the Botany Bay
has been passed down for generations. Harrison knows approximately where to look for it, in fact. So his life's goal is to enlist the resources to locate it and revive his ancestors.
We're going to get Khan from these guys one way or the other, eventually.
The likelihood of that may be contradicted by a stray line somewhere in one of the Enterprise
"Augment" episodes, but big deal.