Kind of surprised by the early feedback, I really would have though this would have been better SF than Avengers, and would get better notices. Still, I can't wait to see friday it...I very rarely go see movies on the first day of release!!
Of course it's better SF than Avengers, because Avengers isn't science fiction at all. But this is. Whether it's the best it could have been is another matter, but it's certainly science fiction. That is commendable.
As for the rest, it is indeed predictable - but then again, so are all the Alien films to a degree.
But that said, I found it tremendously entertaining, pleasantly scary and EXTREMELY well-designed. The central hook of the story,
Whatever the case may be, I'd be on board for a sequel, which this deserves, and requires.