The concept was clearly an inspired one.
The cachet behind the Star Trek narrative may seem to be standard science fiction fare writ large and well-known; but it's more than that, and more than space opera (that is, simple action/adventure in a space context). But looming above all that is a character-driven and symbolistic language that at its worst can be wooden and self-derivative, but at its best can have an archetypic significance.
To explore the original nexus of the ensemble of archetypes can be as lucrative as it can be banal, which is why the idea was sensible. But, in fact, the writing of this film of the origins of the Star Trek crew is good (if not stellar), and the direction has a consistency and some high points that make this film one of the best in the series.
It is dynamic; it is not wooden; and if it is at times prone to cliche (as they all are), the highlights and the overall narrative make this film a very satisfying experience.