Thank you, thank you.
I actually spent more time tweaking the node locations than I did creating the network.
Hey, Ben - re spherical filter: How does this sound for inputs/control values: CenterX, CenterY and CenterZ, Inner and Outer Radius, and then Theta Direction, Theta Span, Phi Direction and Phi Span. I'm thinking of providing scalar inputs to control angular coverage instead of using a color adjuster(s) at the output. That control set would allow you to define a frustum.