I'd advise you change the leaderboard rules then as it still implies that you can reset or top out and start over.

Would there be interest in adding 0-5 and 0-15 categories? I think 0-5 would be a great entry point, and 0-15 would be another good build to players doing 0-20.

Oh, I just submitted some times, then saw this post, well, poop.