It was interesting getting Serge's thoughts on each of the shots. In most cases it seems they go with just what "feels" right - what works best for the moment in the story. I get the feeling he doesn't read quite as much as we do into it, though I would imagine a lot of what we see in the show is deliberate - even if they choose things subconsciously - or just to look pretty (though I know Guy Bee said the water was deliberate in that episode - which is very cool).

Also I love it when they mix fire and water in visuals. So much meta rapped up in that.