The director's cut actually makes a change I just don't like...
Yes, omitting Dr. Schreber's narration at the very beginning is a good thing, as it doesn't give us huge clues to the mysteries of the city in the first minute of the film. But they also omit the scene right after, where Schreber watches the city commotion and traffic suddenly stop, instead just going to the titles right after he first looks at his watch.
The visual of the massive deco cityscape in this scene, combined with the first taste of Trevor Jones' great main theme and the mystery of why everyone suddenly falls unconscious, makes for what I think is a much more powerful lead-in than the Doctor just walking by. My ideal version of this scene would keep that footage, but lose the narration.
What I think of your post: https://m.youtube.com/watch?v=VC4YjOp4Cto#t=10s