Gregor ... you might want to contact Lars Pind, who is working on a redesign of admin UI. There's at least one volunteer who's offered to help rewrite some of the admin pages.
I realize your client needs may make it impossible for you to coordinate, in other words that you may need to finish up a quick rewrite in a very short period of time. If that's the case, that's OK of course.
But if you have time to coordinate it might help us in our efforts to rewrite the admin pages so they're actually usable by admins.
