I like the suggestion that Leonard Nimoy made. It is near the end of the movie and McCoy decides he is going to stay, so Spock basically says that since McCoy is staying, the ship is going to need some logic so he is going to stay as well. Nimoy said it better and it would have gotten a good laugh. Something TMP needed. More humor. If there is audio of Nimoy saying that, then I would love to see them create that scene for the movie.
Isn’t that filmed and in one of the cuts already?