I guess I'll create this topic since it's not up already. Since this episode is mostly about the Art book, wonder if there should be a topic just on the art book.
I really like the idea of the Toa becoming more like Elementals.
Toa => Toa Nuva => Elemental Lords
I like the idea that the Toa Mata can become something more; that they are in fact different from all other toa. It would have been a cool idea if in Gen1 the Toa Nuva Symbols inhibited their full power until they replaced the corrupt elemental Lords.