Sorry for taking so long to reply.

I admire your initiative to think about and discuss ideas - for me, this probably isn't the one.

I appreciate the attraction around the Engagement Challenges, predominantly drive by the involvement of the Steemit Team. But if it weren't for the Steemit Team, would there be any attraction towards it at all? Are there any courses that are being run that you'd pay for?

Admittedly, this isn't your proposal which I'll discuss now. The biggest downside I see is that this technology already exists. In the past, I've used Upwork for projects but there's also the likes of Fiverr, PeoplePerHour, etc so plenty of options - all in a more accessible currency than STEEM. The creation of another one, specific to STEEM, would struggle to compete - especially as the majority of Steemit users aren't here to spend their crypto and are here purely to earn. So we might have people offering services (sellers) but very few buyers.

That's my tuppence. I hope it's helpful.