My take... It was a potentially great film ruined by a bunch of idiotic characters running around like chickens with their heads cut off. I still have hope for the sequels, as we've ditched the unnecessary baggage (seriously, only person I cared about who didn't make it was the captain). I did like the android, and I for one was okay with how the space jockeys were set up, and I hope there's payoff to that in the sequel or sequels.
Thing is, I almost kind of get the feeling that there were actually two movies - the one Ridley Scott wanted to make, and the one the studio wanted. What I'm really hoping is that the sequels will get to explore what Ridley Scott wanted to do in the first place, and that this first movie was just made so the studio could get their sci-fi horror film with all the gory deaths and everything. Like, the pitch was, "Okay, I want to explore the space jockeys and make a movie about them," and the studio was like, "Okay, but can we have an unnecessary crew all get horrifically murdered first, so it'll appeal to a larger audience?"
Of course, even if you did need an unnecessary crew to die horribly, I still think it's lazy writing to just paint them all as morons in order to ensure their deaths. I hate it when movies have to rely on that. That cliche has almost made the entire horror genre a joke. It's hard to get into a movie when the only reason the villain is successful is because the protagonists are friggin' idiots.
But yeah, I did think the stuff about the space jockeys and how they created life on Earth but then wanted to destroy it all could've been very interesting, if the crew hadn't been so dumb. So I'm hoping that with their deaths, we'll actually be able to get into that in the sequels.
And final thoughts - if we ever do start exploring deep space, traveling to other stars and whatnot, I hope the first thing anyone ever learns in astronaut training is, "Don't touch that, stupid!" Yes, I believe there should be a full course on that subject, because dear God, no one ever seems to figure that out.