But it does! (Or did)
The first theatrical release had a drab narration by Harrison Ford. At places it makes it sound like a cheap film noir detective story.
The Directors Cut is the unbutchered version.
Maybe 4D chess by Ridley Scott. Most had seen the optimized version first and was prepared for the magic which is the recut version ;-)
I have the opposite feeling with Apocalypse Now. The Redux version killed the pacing and explained too much. The added scenes are by themselves worthwhile (and explains later actions) but makes the complete movie a bit heavy handed.
By comparison Blade Runner feels more ethereal even though the both cover dark subjects of human nature.
> The Directors Cut is the unbutchered version.
The Director's Cut (released in 1992) drops the narration and adds the dream sequence, but despite the name is not entirely approved by Ridley Scott.
The Final Cut (released in 2007) is the only version where Ridley Scott had full final cut approval. It re-masters the audio, fixes some of the effects (replacing faces on stunt doubles, removing wires, etc), and changes a few lines (most notably "I want more life, father" instead of "fucker"). The color is also re-graded.
Some people prefer the Director's Cut over the Final Cut, especially the color grading, although I saw the Final Cut in 35mm when it was released and it looked pretty spectacular. In any event the changes in the Final Cut are nowhere near as egregious as the Star Wars special editions or the AI remasters of James Cameron's films.