I see. Well, thanks anyway. No idea where I'm meant to get feedback on this though...
Here's some more feedback, then. I'll try to keep it ~positive, since I realize that you have the best intentions here. Understand that it only takes a few people with bad intentions to ruin a system designed by people with only good intentions.
1. You're not confident of the idea enough to put it in the topic. I almost didn't click in because "I have an idea" is vague, almost certainly a bad idea since it wasn't strong enough to make it into the topic line, and probably a waste of my time to read. "Feedback requested for idea: MeritCoin" might have worked better. (In the end, I clicked in mostly for the entertainment value.)
2. You haven't taken any of your own time to poke holes into it yourself. Remember, as soon as something has value, bad actors will come along and attempt to abuse the system to steal whatever value they can, earned or otherwise, solo or in groups. Pretend you're a despicable person with despicable friends. Now look for holes you might exploit. Document these behaviors and how your system will minimize the damage these bad actors cause.
3. Having read your post ~2.5 times, I still have no idea why MTC would have value, or who would redeem them, or what the point of centralization would be, or what "for profit" even begins to mean in this context.
Once you have arguments for
(a) why there's a cold economic reason for people to assign value to MeritCoin ("kindness of their fluttering hearts" is not),
(b) how effective bad actors can be effectively mitigated,
only then can you expect people to show interest and take your idea seriously enough to bother contributing refinements.
In the end, asking others to do your most basic due diligence is kinda rude. Which is why you were mostly ignored.