I'd be glad to contribute to an already existing thread, or course of study, as a contributor but not as a primary. It's an interesting idea.
This may sound a little disingenuous, but I think the above requirement is important, that the course of study/information should "make sure educational experiences are appropriately challenging".
And, to me, that means a place for a qualitative exchange of ideas and not just frequented by yet another person just looking for easy answers and not particularly interested in doing the hard work, themselves.
And that goes for forum members, too, who buy into this by giving in to obvious answers and doing the work for the student, themselves. Nobody really benefits from this.