Good question and as a recent convert to the original Star Trek; if I'm producing a new one everybody is going to tuck their pant legs into their boots.
Also play up that rivalry between Doctor McCoy and Spock. Why can't those guys get a chance to tear off their shirts and fight one another with ancient weapons?
And if you notice Scotty, every time he is left in charge of the ship, and provoked, he always loads the photon torpedoes. Later in the episode cooler heads prevail and the threat is averted peacefully.
I say we let Scotty blow up half a Galaxy.