It's a but confusing to call the beginning of FWWM featuring Chris Isaak, Kiefer Sutherland and Cooper as a prologue seen as it is quite long and FWWM itself is a kind of prologue to Twin Peaks.
Howver, it seems to me that FWWM, an already long film, doesn't really need any of this. I suppose I can only really know this by watching the film beginning with Laura and Donna walking down the road.
How much do you think that the cutting of this part would detract from the film.