The thing that gets to me about Blade Runner, both the film and the score, is the way it presents the future not as some idealized perfect world, nor really even as a dystopian hellscape, but as a realistic society. The way it makes the word "futuristic" seem less like sci-fi and more like what the future actually might look like. The future is dirty, worn, work-a-day. People aren't essentially any different from how they are today, it's just technology that's advanced. It's certainly a theme that you get from the film but it also runs through the soundtrack. This isn't a heroic sci-fi score, this sounds like the music of a future that would still be recognizable to us today.