Coincidentally watched Blade Runner and 2049 before Hauer died. Both are fresh on my mind. Don't recall the first time I saw Blade Runner, I was too little. All I remember is it was weird, much weirder than Dune to me, and I didn't like it. The second take as a teen was essentially: flat, boring, don't get it. What's the big fuckin' deal.
Somewhere soon after that I started picking up the details. Blade Runner 1, somewhat opposed to Star Wars, is one of the reasons I learned that rewatchability/re-examination is one of the most important aspects to storytelling. Dune for instance got better the more I saw it. Star Wars always remained the same. Conan the Barbarian was fucked up and violent once but Conan the Destroyer was cool when I was four. The Barbarian got better as I aged while Destroyer turned into shit.
Blade Runner is a movie that rewards intelligence and does not hold your hand. You can break down Blade Runner's faults and awesomeness in three ways.
1. Visual aesthetics. Grime, noir, dreariness. Indisputably influential since its release, specifically but not limited to the sci fi genre. You don't get Altered Carbon, Matrix, AI nor a thousand others without Philip K. DIck/Ridley Scott's Blade Runner.
2. 80s cheesiness. You can chalk up most but not all subpar shit in the movie to filmmaking techniques and technologies that were standard practice at the time but have since either fallen out of favor or aged quickly and poorly and look shitty to a modern eye. Its editing is at times abrupt and lacks fluidity. Its music is another example; the music is genuinely good but state of the art synthesizers from back then sound primitive today. Some things age well or better over time, some don't. It's easy.
Another good example is the replicant running through glass after Deckard shoots her. Clearly a stunt double with one of the worst wigs of all time. Typical 80s shit.
3. The story is too simplistic. Bad guys want to escape, good guys hunt them down, by the end the bad guys aren't so bad, the good guys might be the bad ones. What does it mean to be human? A trope today, maybe not when Blade Runner was released. The subtext is too vague, not explored enough. Personally not a fan of allegory but a fan of applicability, yet that is what gives Blade Runner its tone and style. It is one its greatest qualities. The movie is rife with surrealism, hard sci fi and philosophical themes, cold details under the surface, and the more you watch it the more you get it. Daryl Hannah acting like a doll, Roy Batty killing god, misquoting William Blake, good shit about C beams and Tannhauser Gates. Not bad.
2049 extends the same themes and is arguably better in every way. It is visually more advanced, the story is bigger and much wider (reproduction but also Joi), measured throughout till the mythological action of killing Luv in the shadow of the Sea Wall and the ocean waves in the night.