Oh cool, yeah that does seem similar and I've seen some of those posts around but never looked deeper into them. I'm personally not a big fan of creating new posts for each edit, just feels like it would make them harder to find and since we're on a linear curve nowadays we could put more emphasis on comment voting. Though not so much that people start trailing those as that always looks weird to have tens of upvote comments while other comments in the same thread only have a couple.
Also thanks for the offer, I may take you up on it but will first check with the dev that first showed interest, though he is quite busy these days so chances are he won't have the time, but will just do it out of courtesy.
Just to make it clearer, I was more referring about organising a test AMA session where the rewards are shared with the commenters in one way or the other, than really implementing the technical part.
I could however manually (and quickly) code something in Python with Beem to start with. I have ideas about the how-to in practice, although the specifications may need to be thought first. In any case, the full project is something worth to be tried out ^^