Although none of it jumped out at me during the movie, there was definitely some bad writing that occurred to me afterwards:
- The entire story seemed built upon convenience and coincidence, everyone in the right place at the right time. As Spock (Prime) said, "How did you find me?" How, indeed! Ooh, Scotty's next door! Delta Vega is very small, it seems.
- That everyone could so easily end up in their ultimate positions seemed, in retrospect, to stretch credibility. Uhura knew the Romulan language. I'm not exactly sure how it was justified that a 17 year old Chekov and a Sulu who, it seemed, had never left spacedock could end up at the helm of the new flagship. The Chief Medical Officer was killed, lucky for McCoy. By the time Scotty was on board, it seemed they just gave him his shirt and towel and made him Chief Engineer (although someone has pointed out that Olson The Redshirt had been Chief Engineer). It made the crew seem very small.
- I can accept that Delta Vega in this move is not be the Delta Vega of "Where No Man Has Gone Before". But is this one (an M-Class Planet according to the computer, not a moon) really so close to Vulcan that Spock could, well, you know.
- Regardless of Nero's ability to get past the Earth Defense Grid, would no one on the planet try to take out that drill before Spock arrived in the jellyfish?
- You'd think that at some point during the 25 years, Nero would have managed to confide in his henchmen what the plan actually was once Spock Prime arrived.
- As much as I love the Enterprise, new design and all, I'm not sure I "get" where everything is. It seems the bridge now occupies more space and levels than it used to (the window shot). Was the transporter room down the hall? The ship looked big on the outside, but felt rather small and empty (or, rather, full of pipes) on the inside.
- Speaking of things seeming smaller, Warp 4 seems to get you places a lot faster than it used to.
- Bad Sci-Fi. A "supernova that threatened the galaxy", whose impact/effect would have traveled light years to obliterate Romulus. Again, like the Enterprise and the warp drive, it made things feel small, and that one really nags me. Like you said, just a few lines could have fixed it.
Still, they didn't bother me one tiny bit during the film. While I was in the theater, I had the time of my life, more fun than I've had watching a movie in decades. And probably more fun than I've ever had watching any other Star Trek film.
Question: Sooooo. Stardates. Old system completely out the window now?