Oooookay.
I enjoyed it. The first shots of the Enterprise in space almost brought a tear to my eye as it hit home that this really was Star Trek again. The cast were great, especially Quinto and Urban, and the action, emotion and even the humour all worked for me.
However, there are several issues I have with the film that stop it reaching the hights of The Wrath of Khan, The Undiscovered Country or First Contact. The first of those is pretty fundamental, as despite the alternate reality setting being a really clever way of sidestepping continuity, it's still asking you to accept that these new actors are playing the same characters many have enjoyed through three TV seasons, seven movies (counting Generations), and even guest roles in TNG. I really like the way the new cast play them in their own rights, combining established traits with their own style, but aside from Urban's spookily accurate Bones my mind just won't quite accept them as the characters I know and love. On a related note, the biggest strength of The Original Series was the chemistry between Kirk, Spock and McCoy, and while we see the start of that it's obviously nowhere near as compelling just yet.
The other issue is that it felt very lightweight for a Star Trek story. In the past, even in its most action-packed installments Star Trek has always dealt with issues of science, morality, politics and the like, and generally felt the universe was full of complexities waiting to be explored. This Star Trek is a simple story of vengeance and heroism with barely any depth to speak of, and while this makes for a fun blockbuster, it doesn't make for a particularly great Star Trek movie.
Speaking of science, well, you do unfortunately have to dissengage brain at several points, and that's something a Star Trek movie really shouldn't force you to do. It doesn't even attempt to explain how Red Matter creates black holes, as the very concept is completely retarded (it's no Genesis device, is it?).
The phasers recoil when shot. What does phaser stand for again? Oh yes, it's PHASEd Energy Rectification. Basically they're massively powerful torches, and don't you just hate how torches try to fly out of your hands when you switch them on? OH WAIT LOL! Also, they really shouldn't be playing with pulse phasers until the 24th century, but I'll let that slide.
Scotty somehow beams Kirk and himself onto the Enterprise from a planet, several hours after the Enterprise has been travelling away at several times faster than light. He does this using the transwarp beaming formula he supposedly invents in the future, presumably in the TNG era. It's such a shame that it was clearly ignored by everybody in that time though, as it would have been useful to be able to beam people onto moving targets from several lightyears away. Probably because it'll be conveniently forgotten for being retarded.
Then there was all the blockbustery stuff that felt a little out of place. Kirk and Spock fighting their way through a ship full of armed Romulans for instance, despite accidentally being beamed right into their midst.The destruction of Vulcan was a brave move in this new, reset-button lacking reality, but for such a huge event it was relatively glossed over. It made for some good character development for the Spocks (Nimoy was amazing incidentally), but this new blockbuster Star Trek made no room for the political ramifications that alone would have made for a great movie in the past. Heck, Star Trek VI was all about the effects of such an event, but that was just a Klingon moon! Oh, and while the space battles made for entertaining spectacle, they had none of the naval grace of the old movies, and definitely none of the intelligence and tension of Kirk Vs Khan. The Enterprise turning up at the end was pretty awesome mind, if a shadow of the Excelsior's similar save in TUC.
Aaaand... relax!
It's a good film, and simply taken as a sci-fi blockbuster it was enjoyable, and does a great job at setting up an ongoing series, in whatever form it takes. It just feels a little pointless to go to the trouble of rebooting the series in this way when it feels so very different to what went before.
Speaking of which, bearing in mind that Nero changed the timeline before the Enterprise's five year mission, how come the Enterprise emblem was already the universal emblem of Starfleet? Eh? EH?
EH?