Looks nice, but the effort I would really see on the WP admin is to improve accessibility. Why bother redoing the backend but not addressing the existing contrast and other accessibility issues? Contrast feels like low-hanging fruit that could have easily been resolved with Admin 2020’s color modes but the same errors persist, which is disappointing.

As an agency I don’t really see this useful unless we were whitelabeling WordPress and limiting client access. In our current model, clients know they’re using WordPress and many are brave enough to try their hand at making changes to the site. We also use WP101 training videos to help them lean how to use the site. As a result, we would never change the way the admin looks because it would no longer match what people see when they Google or watch a training video (which would only cause confusion).