With this challenge, its really good to see the FX bar have been really increased from the previous challenges.. But FX seems to revolves mostly on 3D side rather than compositing. I hope to see next challenges which at least gives equal importance to both 3D and compositing side rather than 80% work on 3D and 20% on compositing.
The shot can be achieved using both 3D and 2D techniques, for example Oracle challenge was fair on this regard.
Just my thought, Anyway how its really cool to see some mind blowing entries.