This is an excellent course.
The most difficult/frustrating part of working with a complex node setup is keeping track of the flow/noodle contents. There doesn't seem to be a way to label them.
Putting nodes in frames helps a tiny bit, in some cases. Using groups instead of frames helps a lot more, but interferes with conveniently using the Viewer.
Any type of solution/workaround for this would greatly increase usability. I don't know if it is envisioned for the future. Are there any good tricks I'm unaware of?
Thanks. Labeled reroute is basically what I was looking for. I have never seen it mentioned.