Hi Sven,
I would definitely be very interested in contributing to the project in any way I can. I don't have much more than rudimentary coding skills, but I am an experienced Instructional Designer and E-learning developer.
I think I could offer most help by testing out the authoring tool when it is released. If you would like to add me to a wait list for testers, please go ahead. I've previously been involved in testing the Wiimote IWB for the open source WiildOS project (Italian).
If there is anything else I can do to help in the meantime, please let me know.
Seth.