This is a great discussion.
Kerry, I believe that Steven Walling and what was called the E3 team, now known as the Growth team, use eye tracking experiments. It would be interesting to hear about what they're learning, and tie those observations together with yours and WSC's.
Also, I am happy to discuss the idea of teaming up with one or more people in this discussion to create an Individual Engagement Grant proposal that would help us to explore some of the material that we're discussing here. Aaron and I are already putting together a proposal related to how editors interact with each other, and I'd be happy to work on concurrent projects related to research on new editors if I can make the scheduling and financing work.