The requirements are a direct function of our ongoing customer dev work. You're gist is absolutely right - there are a ton of great tutors out there who have never taught a class. However, when you look at the overall hitrate of good tutors amongst populations of educators relative to others, you get a sense for why we are starting where we're starting.

That may change over time as our community grows, but our goal here isn't to create a system that is everything to every tutor. We're focused on a specific problem, and are working on a specific solution to that problem. We'll analyze data along the way and modify our assumptions as necessary.