I think that such a course would benefit from a one-on-one (or one-on-few) framework, that seems well suited for the practical nature of the training, and provides better focus than a one-on-many learning, or individual learning.
The way I imagine it is that there is a single "instructor" working with either one or several people. This would allow the instructor to devote plenty of attention to the "students" and their work.
The materials would form the basis of the course - and in an iterative manner, the participants would be obliged to "give back", by adding / improving to the course materials.
I think that the provision of solid content (well written, clear, easy to use for others) at the end of the training experience is a key element, so that in the long term the course can evolve.
If such a course could be funded, than the funding should go with the requirement of creating such content.