Well, it appears that users didn’t like the way the dashboard used screen real estate. While the WordPress team doesn’t describe what the users complained about, the key navigation options are currently along the top, and I would guess that users who have widescreen monitors are pointing out that horizontal screen real estate is less precious than vertical. So the team has created a survey to get user feedback about some design options.
This is a tricky task, and it could have been made a little easier by some better user requirements gathering. For instance, what the team is fundamentally trying to do in identifying top-level command categories is classically served by “card sorting,” a classic usability design exercise. They might get better feedback by doing a card-sort study, either offline or with a software package like WebSort.
Second, the presentation of the choices doesn’t include a control. It assumes that all users prefer the vertical menu and presents variations on that option. Adding an option for the existing horizontal menu might present some valuable information on how users feel about the existing option.
My opinion may be tainted by my personal preferences; I’m one who finds the current administrative interface design preferable to what I’ve seen so far of the new direction. But regardless of my personal feelings, there’s something to be said for rigorous user centered design in determining the next direction.