Studios, learn this mantra: screenwriting isn't Mad Libs. Throwing more writers at a broken script is like slathering fistfuls of ointment on a sucking chest wound. The patient is dead, Jim. Just start over. Please. However, props to Pegg, Jung and Lin for trying to keep it together, giving us the wonderful Jaylah and the heartfelt tributes to Nimoy and Yelchin.