I plan to run a Drupal 8 Toolbar and Admin Information Architecture research study, to inform any improvements to the current Drupal 8 admin IA. The target participant is a site builder and/or heavy content creator.
But first, what questions do you (or people you work with) want to know about the current IA? How people are using? When they are using? From what devices? Etc etc.
Put all your questions you'd like to answered by this study in the comments below. If there are duplicate questions, great! That will help inform priorities.
UPDATE: Study plan (in progress)