I just got home from seeing it.
Personally, I'm not disappointed. But also I'm not 100% ok with it either.
I'll give it 4 out of 5 stars.
I think maybe some people we're expecting something different, judging from reactions I overheard as I left the theater.
Possibly some folks might have been expecting more of a direct prequel to alien. It's more of psuedo-pre-prequel.
As a fan of all alien films, it leaves me contemplating how it connects up with alien. It's more a story that is from the same universe as alien, just earlier on the timeline. It's not really a thriller film or even an action film. It's regular sci-fi with a few shocking scenes. As a regular sci-fi film, it leaves one thinking.
On the down side, there are only a few story elements and scenes that I found a little over dramatized.
Also from an effects standpoint, it was great, but as with any prequel of a sci-fi movies from years ago, everything is a lot higher-tech appearing than the original. The Prometheus has fancy holographic displays, while the Nostromo had Apple II quality displays. But now I'm just nit-picking.
Overall, I recommend it. Just don't go in with expectations and enjoy it as a stand-alone film all it's own.
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Your Aspie score: 172 of 200
Your neurotypical (non-autistic) score: 35 of 200
You are very likely an Aspie
Diagnosed in 2005