To #1, I recall him saying that he loved the reaction as I am (I think it was that) was getting live and wanted more of it. Anyone back me up on this? It's also noteworthy that his gear choice has been getting steadily heavier, think Ibanez to music man and now 8 string? This is the progression in observing, not knocking it
To 3, I'm taking complexity. Octavarium is a ridiculously complex song. To me it's the most complex song in the rock genre. I'm talking melody, sections, instrumentation, virtuosity, time sig, themes, and the combo of those. That's what I mean by difficult to compose