Finally saw this today (gotta love a theater to yourself). Loved it.
Not going to get into the product placement (except to say I'd MUCH rather see them order a name brand beer than say "gimme a beer" - as if there's only one kind - which is entirely unrealistic.)
But anyway, I thought it was great the way they played with the future, and can now move forward unimpeded, while still respecting what "was" (or in this case, "will be"). I wasn't bothered by the more "military" and "action" aspect (I'm assuming that's what LS meant by the Starship Troopers comparison). Star Trek has been moving in that direction a looong time (for example, "military rank" played a MUCH bigger part in TNG than it did in TOS - and DS9 definitely took Trek "action" to a new level in the later seasons).
At first, the Uhura/Spock thing bugged me some, but then I realize by the end that it clearly put the exclamation point on the "same, but different" aspect they were going for. Nicely done.
Easily the best Trek movie since Kahn.