Quick question: The Klingons in this movie looked very different to TNG Klingons... why is that??
There was a makeup change for klingons between the original series and TNG to make them more alien. In one episode of TNG, the klingon Worf goes back in time and one of the characters asks him about it. All he says is, "We do not speak of it." But Into Darkness takes place back with the Original Series, so they needed to show that weird part of the lore, somehow.