7. Chekov Cant Meet Khan Yet
Scottie proves to be a much bigger piece of events than in the previous film, resigning from duty and eventually finding himself aboard the USS Vengeance. Due to his proficiency in the area, Chekov is 'promoted' to his position. Itd be quite easy to dismiss Chekov taking up the role of Chief Engineer simply as a screenwriters solution to filling the hole Simon Pegg's Scottish engineer left on the Enterprise. But theres a much geekier reason at play here. Khan first appeared in Season 1 of The Original Series, but Walter Koenig didn't join the cast as Chekov until Season 2, making The Wrath Of Khan the first time the two characters paths cross (in fact, Chekov's the only crew member of the Enterprise to meet Khan in person in that film... which leads to a memorable continuity mistake of Khan remembering Chekov and "never forgetting a face" despite it being the first time they have met!). In putting Anton Yelchin's Chekov below decks, Abrams and co. have maintained that element of the film, potentially holding back scenes for a later instalment with Cumberbatch.