Blade Runner was based on Phillip Dick's "Do Androids dream of Electric Sheep?" But if you read the book, you'd know it wasn't followed in the movie. Just the basics.
I liked the first Blade Runner because there was more interaction between the characters. Even tho the replicants could ruthlessly kill, there was still a sadness and a feeling of loss when they died. They were slaves with a limited life span trying to find answers and live. So they weren't really the bad guys but Harrison was supposed to hunt them down.
The new movie does have great visuals but lost that uneasy thread of the story.
If you've watched the movie, what did you think of the scene where K and the tough lady replicant were looking thru records? When he asked about the voice recording and she said that Sean Young was interested in Harrison because she was asking him questions to provoke him. Didn't the lady replicant begin to do the same to K, but he shut her down? She asked "Do you like Police work?" He just continued on. If they had just gone down the road a little more on this, it would have been interesting. It would have made that little stomping of the travel device for his virtual girlfriend, a show of jealousy. Oh well.