SilentJay
Explorer
It makes it a big budget piece of fanfiction. Star Trek isn't just about the characters, it is about humanity. The characters are just there to be a sounding board for whatever piece of humanity is being explored.
The themes of the film, without spoilers, are:
1. How we must set aside personal and cultural differences in order to solve our problems.
2. How personal responsibility not only affects the one, it affects those around them, and that in order to succeed we need to take ownership of our lives.
3. That while cheating may seem to be the easiest and most attractive way to solve an issue, it usually leads to unexpected consequences that end up making the situation worse. (Okay, this is anti-Trek, as Kirk was all about the cheating.)
Edit: there are other themes to the film, but these are both the most obvious and the ones that don't involve spoilers.
So, in other words, the film is a sounding board for an exploration of the human condition. It also happens to be a slam-bang summer action movie.