I've been left frustrated by long render times on the opening section, so that part is currently motion blur-less. Meaning it's looking a little bit strobey which the blur resolves. However, the rest of the piece is pretty much there with the main bulk of the animation. I'm still debating whether to get the middle two scenes onto 3D layers, but my instinct says to leave as is. If only because it's nice to keep certain parts flat while others have more potential to pop out.