Challenging someone to compose 50,000 examples of a method of that isn't used much anymore is hard to ask of anyone. I could imagine if you asked a person to write 10 for fun and to pass the time. I would bet no one on here would be willing to compose 50,000 examples of traditional counterpoint because that is just too large and too time consuming.
I can see where you're coming from in terms of the "journey to mastery," but a person can master this concept without having to do 50,000 examples of it, I can guarantee you that. I bought Fux's Study of Counterpoint, learned from that what I needed to know (which was all of the material contained in the book), and I was good. I maybe wrote 10 to 20 per species, and I had the concept learned and mastered. Writing 50,000 as a challenge is a waste of time and does nothing for a learner except waste the time he could spend on learning another subject or part of music. It's counter-productive.
I appreciate what you're trying to do, don't get me wrong, and I'm not meaning to sound negative, but if that is something you wish to do with your time, so be it, but you must think about what you're asking of others.