Hey, just a suggestion for this, but:
- every day (or every few days), you should post 12 scrambles.
- people film average of 12 with those scrambles, but can of course do other solves for practice.
- first person to get the sub-20 avg12 wins
So you can run it more like an actual contest/tournament. That way you'd have rankings and everything, so people can get motivated by how close others have come to the barrier, and you have something to compare people with (rather than just letting people post averages with any scrambles). This wouldn't necessarily mean that the winner is the first person to do a sub-20 average of 12 in practice, but it could be more interesting anyway, and you'd have to be relatively consistent at sub-20ing to win.