Would Khan have a cause that we may feel empathy for, as Cumberbatch says the character does?
And on whom is this Khan seeking vengeance?
And how does he get into Starfleet (or at least the "organization," as it's said in the synopsis)?
Why does he want to save a little girl?
And finally, Khan with a pseudonym? Really? Khan? The great and mighty Khan afraid to reveal himself? Khan don't need no stinking pesudonnym. He's Khan.