Great diagrams Harold, I hadn't seen these terms before you started talking about them (as with many other things).

It is a bit of a bitter pill (with my experience at least) to think that salespeople are the critical role.
It led me to start questioning this and I started seeing the network as symbiotic with all having equally important albeit different parts to play.

Now maybe I'm just saying this because I'm not a natural catalyst - I have to work at it - but I think that if you define one roll as more critical in a network you may have taken the first step back to a hierarchy.

Is network the antithesis of hierarchy? Maybe not, but the idea of a network where all are equal but one is more equal than others is all very Animal Farm.