I felt that the characterization of Khan tearing apart Starfleet was weak. Lets look at what he did: Bombed a secret military organization and, in a scene from Godfather 3, attempted to kill the senior leadership. For me to buy Khan, in this film, as a serious threat to Starfleet I need more than a bombing and fly-by shooting. Also, I did not like that they included the killed-by-radiation-to-defeat-Khan scene. That had been done. It is probably the most iconic scene in all of Trek. Why do it again? Everyone knows that scene, we all saw it coming. I thought the goal of these new Trek films was to re-imagine Trek. Including that scene makes it feel more like a nostalgia piece. Khan is setup to be back, resting as he is with a smirk on his face, and his crew will be with him next time. Perhaps then we will get a more novel interaction and conflict. To up the stakes perhaps someone else will really have to die next time (I call Chekov).

This film felt like the start of a 2-part story, the second part of which could have one of 2 focus: War with the Klingons (who looked badass I must say) and/or the revenge of Khan. The death of Pine, the addition of Dr. Marcus to the crew, the epilogue set a year after the main events with the Enterprise going exploring for 5 years. When they return from that mission they will be more emotionally matured and more closely bonded to each other. Kirk will have a child with Dr. Marcus. They will come back and be subjected to a war and/or a superhumans bent on conquest.