If you want to know anything about the design or discuss/suggest, you can ask me, I guess, just so that I can take some hits for Dirk
And to start with something.

QWERTZ layout is technically impossible right now because all our "raw" keypads would most probably have QWERTY right from the factory to save costs, we're terribly sorry for that but we don't have another option for now.

Having said that I should state, that this fact does not mean there would be no way to modify that "raw" keypad to have additional characters of your taste, whole design has been developed around this idea.