I said from the outset that all it needed was a bit of tender loving editing.
Is it too early to pull an Ocri?
Nevermind I'll put up another suggestion to take the heat off you:
Someone said that the writers originally had planned for Khan to be an ally of Kirk.
I think they should have run with that. I don't think that Khan should have tried to destroy the Enterprise just for the sake of it at the end. Just to get away.
Then after Spock chased him, Khan should have stopped him by 'saving' Kirk with his blood.
Then at the end Kirk should have let him and his buddies go with a promise 'that they'll behave themselves'. Of course Spock gives Kirk the eyebrow saying 'bloody idiot'.
Then Khan is free to be Kirk's enemy or friend in the next movie.
Feel free to lob your criticisms. Don't be too cruel.
I don't care all that much about the physics either just so that its not that obviously bad that I notice (on my own)