If only everything else were so engaging. The writers seem incapable of making anything convincing, whether it's some pseudo-science nonsense that falls into the uncanny valley of believability, or simply the ability for characters to appear like they belong. Hapless Chekhov (Anton Yelchin) and Scotty (Simon Pegg) come off worst here, Pegg's comedic roots again highlighting how sadly miscast he is.
"Bones" McCoy (our own Karl Urban) seems to be the only survivor, his exasperated helplessness at Kirk's reckless behaviour continuing the near-perfect characterisation he nailed in the first film.
Into Darkness relies upon its climax for much of its heft but, instead of going for the originality it needs, it mines older Star Trek films relentlessly. The context of the Enterprise's fall (as seen in the trailers) is utterly implausible, and they think they can get away with copying one of the old films' most famous lines. Is it meant to be an homage? It just feels cheap, like their treatment of the film's other big "wham" moment.
Into Darkness was always going to have a lot of baggage to deal with - but then so did the Batman films, and look at how well they handled it. It's telling that the film's most affecting moment comes right at the end, when the classic Star Trek horn theme plays. It may be that the new franchise will never be able to escape its past.