As you may have figured out by the title, during the GDC 2019 Edition of the “Technical Lens” Roundtable, the topic of flow map creation (like this example here) came about. It was requested that this topic was posted onto the forums to be linked in @Drew notes, for which I volunteered to create.
… and … um. Ta da! Here it is! So Meta!
I’ll update this topic once the notes are posted.