No, on that one I'll disagree with you, CoR. I think it is a great film, because it didn't slavishly follow the book, but developed the same themes (and with Dick's approval) in a different medium, with different requirements; it also allowed for a different approach, allowing one to see the emotions of all the characters in very subtle ways... and how they are all trapped within this cultural matrix. In a way, they are all constructs (even Sebastian and Bryant), playing their roles accordingly... and Roy may be the most human of all, by breaking out of his "predestined" role not only once, but many times. (I think, for instance, of the incredibly compact arc of character development offered in that small sequence of Roy in the lift after having killed Tyrell and Sebatian. That little piece of film manages to say enormous amounts in a very brief space -- something the book simply could not do as succinctly. Also, the set design, etc. are important not because they're "glitz-&-glamour", but because they create a milieu realistically, with richness of detail that would take hundreds of pages in a book. Those aspects of film are not to be despised save when the people doing them are lazy or slipshod -- which was by no means the case here.)
As I've said before, I think the book and the film are both very good pieces, but each is adapted to its own medium, with the strengths and weaknesses of that medium. Blade Runner has a tremendous lot to offer on many levels, but they are not the same as those offered by the book.