I just want to mention this, because it seems to be totally ignored...
In my opinion, you risk looking like a big ass if you pass final judgment on a movie score without even seeing the movie it was scored for.
Alien3, without the film, is at times staggeringly beautiful, and at other times a total chaotic mess. I mean it's a basic thing to say, but there's just so much talk of disapproval when we don't even know how the film will feel or how the score will work with it.
Blade Runner is the same. It's amazing music by itself, but it fits the film like a glove. I don't think it would work with any other film, and if I could've heard it before I'd seen Blade Runner, it would've seemed very strange indeed.
I think that's more important than judging it as some stand-alone piece of music. It has to work with the vision and theme of the film, first.
An example that always comes to mind is Terminator: Salvation. That score was one I consider very underwhelming, especially considering the ridiculous composer they choose for it (Elfman, really?) but when listened to by itself, I actually really like it. I just don't think does anything for the film. Most of the time as I watched it, I could barely remember any music at all.
/Two cents.