1- After submitting a cube, reveal the accuracy rating (maybe even + or – from previous cube) at the same time as number of points
2- Leave cube up after see results for accuracy to see what did right or wrong…. (of course, would be even better if gave direct feedback like in tutorial).
3- Identify the best players (most accurate and most active). Put them on hangouts (live stream their screens with audio comments) and have them communicate their best practices.
4- Have best players who can abstract their methods in a way that can be turned into algorithms that can be tested by AI and other best players.