Assuming it gets made:

The visuals and sound design in Blade Runner are simply arresting. And the narrative — based on a short story by the prolific Philip K. Dick — ain’t bad either, focused as it is not only on a multiple manhunt (synthetic manhunt?) but also on the existential angst of the characters, grappling from their own particular points of view with the sadness of the human condition. But not in that annoying French New Wave way. This is an American movie. A Hollywood movie. It just happens to come across as artsy because it is beautiful to watch and hear. — Jehuda at PJ Lifestyle

Wikipedia’s article (with some SPOILERS) states, in part:

The film depicts a dystopian Los Angeles in November 2019 in which genetically engineered organic robots called replicants—visually indistinguishable from adult humans—are manufactured by the powerful Tyrell Corporation as well as by other “mega–manufacturers” around the world. Their use on Earth is banned and replicants are exclusively used for dangerous, menial or leisure work on Earth’s off-world colonies. Replicants who defy the ban and return to Earth are hunted down and “retired” by police special operatives known as “Blade Runners”. The plot focuses on a brutal and cunning group of recently escaped replicants hiding in Los Angeles and the burnt out expert Blade Runner, Rick Deckard (Harrison Ford), who reluctantly agrees to take on one more assignment to hunt them down.

Blade Runner initially polarized critics: some were displeased with the pacing, while others enjoyed its thematic complexity. The film performed poorly in North American theaters but, despite the box office failure of the film, it has since become a cult classic. Blade Runner has been hailed for its production design, depicting a “retrofitted” future, and it remains a leading example of the neo-noir genre.

Blade Runner brought the work of author Philip K. Dick to the attention of Hollywood and several later films were based on his work. Ridley Scott regards Blade Runner as “probably” his most complete and personal film. In 1993 Blade Runner was selected for preservation in the United States National Film Registry by the Library of Congress as being “culturally, historically, or aesthetically significant”.

One commenter sums it up fairly well:

“I don’t typically like sci-fi, but I didn’t really see Blade Runner as sci-fi in any recognizable sense. Sure, Harrison Ford had a weird-looking gun, and they did things with computers that were futuristic at the time (photo-enhancing isn’t the future any more). The cars were futuristic. But really, the gritty, dirty, noir setting of the film wasn’t the typical sci-fi setting (with its pristine sets and beautiful people wearing tailored matching uniforms) that most sci-fi pics portray. From the noir atmosphere to the first person narration by Ford, it was more or less a Private Eye film with a futuristic setting, and that set it apart from most of the rest of what was on the screen then, and now.” — David W. Nicholas