Pelo says...
Pros?
~Chilling.
~Grim.
~Simple, yet powerful.
~Sets the mood.
Cons?
~Mildly repetitive.
~Delay effect?
Overall?
Simplicity is key...this piece doesn't need a lot of bells and whistles to convey a message of darkness and despair. This would go great in a sad movie/cutscene, or as a dark level of some sort.
~Pelo