All I can say is that, if I am trapped on a desert island, and I can bring only four "Trek" movies with me, this would definitely be one of them.
Come on. There are plot holes, monumental coincidences, questionable character motivations, and re-hashing of previous stories in EVERY "Trek" film. Compared with the utter non-stories of "Star Trek: The Motion Picture" and "Insurrection," I thought this was a pretty good script. (Obviously, some important scenes were lost in editing, but I don't blame the writers for that.)
I seriously can't understand how anyone who saw "Star Trek: The Motion Picture" can say with a straight face that this new movie isn't about anything. (I'll take Nero over V'ger any day of the week.)
To the contrary, this is one of the first "Trek" films that shows time travel having real consequences, rather than having a big reset button at the end that removes all possibility of drama and suspense.
Unlike the "Star Wars" prequels, where we already know how everything will turn out, this new timeline enables us to see familiar characters again, but we can't say, "I know that character will be around 10 years from now, so he will never be in any jeopardy," or, "I know Vulcan is still around 100 years from now, so there's no chance of it being destroyed."
Had this movie been that kind of literal prequel, there would be much less drama or suspense, since we'd already know that nothing dramatic can happen to change the course of history.
This plotline was the only way to use these popular characters again, while at the same time giving them actual threats and jeopardy to overcome.
It doesn't matter whether we use a "red matter" black hole to go back and get the screenwriter of "Casablanca" to script the next film. A vocal minority of "Star Trek" fans will ALWAYS find SOMETHING to complain about.