They should have brought back the Ceti Alpha V eels
Watching them crawl into peoples' ears and then Khan turning those infected people into his own personal slaves would have made for a more enjoyable and interesting film.
shareThere was something similar in the first one when the Romulans had captured Captain Pike.
shareWhich is why I'm not a huge fan of this particular film. There was SO MUCH in the 2009 movie that was a callback to TWOK:
The parasites used on Pike
Prime Spock introducing himself to Kirk in the cave ("I have been, and always will be, your friend").
Nero yelling "SPOCK!!!!!"
Spock saying, "I'm aware of my responsibilities" (Saavik says it to Sulu in the simulator).
The Kobayashi Maru.
Spock as a Starfleet instructor.
The windows of the Enterprise spelling out "Khan" in Morse code at the end.
There was enough there to make the point that the first movie was the tribute to Khan that they didn't need to tell his story again this time around. I don't have a problem with BC's portrayal of Khan (he's not Ricardo Montalban, but that's not his fault), but the the movie would have been better if they had simply told a different story all together.