It's so easy to complain that a story has already been told, and that there's no reason for a sequel because the self contained narrative doesn't facilitate it. It's an easy argument to make, and I used to make it too, before Blade Runner 2 made me give up. You don't need to argue that Blade Runner doesn't need a sequel, because Blade Runner is that argument. It's dense, defined by its times, is over thirty years old and has one of the most famous cliffhangers ever. It speaks for itself, and yet we're in for Blade Runner 2, because hey, it's okay, this is just how time works.
Time is infinite, so of course Blade Runner 2 is being made. It's a thing that could exist. When people are complaining that Star Wars: Episode 16 is being rebooted, just know I called it here. Lord of the Rings will get a sequel, Harry Potter will be rebooted, Fast and Furious will be adapted for a Netflix show, then Netflix will be rebooted. It's okay. Stop worrying. Everything will happen, so just enjoy it in the now.
So let's just accept the modern moviemaking landscape, and watch Hollywood try to convince us that this sequel needs to happen!
Ridley Scott will not direct!
The only reason I can imagine for Ridley Scott not directing Blade Runner 2 is that it's too small and lo-fi for him. By that I mean Blade Runner doesn't require epic sweeping shots, historical battles and on the nose religious commentary. Maybe producers wanted to cast Mohamed So-and-So, and Ridley didn't wanna work with that guy.
I don't see this as the biggest loss. It's almost shocking to watch Alien and see how fantastic Scott was with the restrictions of his early career, but bringing a director back to replicate their prior brilliance does not guarantee success. Prometheus is excellent proof of that. Essentially, I could just replace this entire paragraph with a picture of George Lucas and make the same point.
Adapting the Book's Sequel?
Blade Runner 2: Edge of Human is a 1995 novel by K.W. Jeter, that elaborates on both the film and the original book Do Androids Dream of Electric Sheep? by Phillip K Dick. It has a cool title (if sounding a little close to the Bridget Jones sequel), yet toys so freely concepts from the first film. Characters you thought dead are alive, characters who survived the first story are now killed off. This is unlikely to be the basis for Blade Runner 2 (because trashing the expanded universe is what's in now, eh JJ?) but the issue with a Blade Runner sequel still persists.
Any sequel to Blade Runner undoubtedly ruins any of the thematic or narrative weight employed by the first film. "Is Deckard a replicant?" was not a question that needed answering, that's why we've been just fine for thirty years without Blade Runner 2.
Harrison Ford Returning
Is Harrison Ford cursed? I'm honestly wondering if a demon didn't make a deal with him in the 70s. "You will be a cultural icon and a symbol for cool, but you must return every time your fans won't let the thing they love die!" How naive Harrison was to sign that mystical contract back in the day.
Harrison Ford's return also screws with the brilliant enigmatic questions posed by the first film. "Wow, what a brilliant mystery! Is Deckard a replicant?" (old Harrison Ford steps on set) "...no"
This is the one glimmer of hope I can see from this production. Ryan Gosling fits a noir aesthetic beautifully, and has that timeless quality that Harrison Ford had back in the 80s. Or he's just young. I'm not just saying this because liking Ryan Gosling is a default for having opinions. I love Only God Forgives because I'm weird, and would love to see him implemented even better in future. The idea of Blade Runner 2 being a separate story with Ryan Gosling is intriguing, and could save the entire endeavour. Of course, that isn't the case, because the filmmakers know it's cool to bring back Harrison Ford, and it's cool to cast Ryan Gosling, but fail to realise that a sequel to Blade Runner is about as cool as rebooting Indiana Jones starring Taylor Kitsch.
Let's not worry. As I've made clear, there's nothing to be gained from complaining about sequels and remakes and reboots. Everything ever is going to be made eventually, so let's just sit back, calm down, and start complaining about Blade Runner 3. OMG can you believe they cast Justin Bieber as Roy Batty?