From what I understand it is possible to contact Kahn Academy about adding content to their site.
All it would take would be for a few language instructors to add their time to the process.
I understand that KA is trying to monazite the process of their delivery model, so anyone willing to do this would also have to have compensation.
That being said, wouldn't it be great to have a resource that was community vetted that basically anyone could use to cover the mechanics of a language.
I would also think that this would be particularly attractive to anyone up for tenure as proof of academic achievement.
I would love to say that I have 10,000 successful students that have taken my course.