Cadsoft, wouldn't be good if you hire Andreas Weidner ? Off course if he's
willing too.
It seems to know more about your piece of software than any advanced user,
has use-it more than any of your software developers, it's willing to help,
it's natively german, and it's full of good ideas! And the most important
thing, it has some good years of experience in teaching others how to use
your application...