Does everything have to be explicitly presented? That would make for a seriously dull film (in any case, not just Trek).
There are a series of Youtube clips that compress the plot of entire movies down to a minute or two. Here is the entire Godfather saga in three minutes.
Is that your idea of a good time? I mean, is any amount of plot-compression too much? Just show a series of nonsensical explosions and call it a day?
Into Darkness had an incredibly fast-moving plot as it is. An extra few minutes of character moments would only have helped.