That's exactly right. The good-citizen effect works against you, because even the most talented developers with the best intentions to help others won't be as

That's exactly right. The good-citizen effect works against you, because even the most talented developers with the best intentions to help others won't be as committed or available as the middling developer who actually needs the money. Quality control became an issue almost immediately for us, and managing that component can become a FT job rather quickly. I think this can work, but probably has a better chance as a Kumon-type model where you have much tighter QA over your mentors and can provide a consistent experience to learners.