Seriously?
Im not normally a staunch anti-sequel person out of the gate. But if ever there was a sci-fi film that stands on it's own as a work of art, it's Blade Runner. Barely acknowledged when it first came out, it's influence nonetheless crept and grew. Today it has been arguably as influental as Star Wars. So many other works have borrowed from Blade Runner, but nothing else is quite like it.
I will give a sequel/prequel a chance if I think theres room for another story there. But having been so influential, I feel like the styles and themes of Blade Runner have already been revisited, sometimes lovingly, sometimes ham-fisted. The story of Decker hunting the replicants is complete. A little while back io9 did a most inglorious death scenes in Science Fiction list. Well at the opposide end of things Roy Batty had one of, if not the best death scene in all of science fiction cinema. Not going to top it.
And besides, it's supposed to take place seven years from now. At this point to return to a world so obviously improbable runs the risk of having the same effect of seeing the lights come up in the nightclub at the end of the night. Everything that cannot be is exposed, the mood is killed, and we forget about the spectacle and the magic.
I do not want this.
A pink gun however, I find that kind of tacky.