I wonder if in the end there will be just a single model, and a single faceless coder who actually makes the best predictions, and the whole of Numerai will be just an elaborate way of finding that particular person and his model to make the market.
Kaggle competitions also see this. https://www.boozallen.com/content/dam/boozallen/documents/20... [page 93] shows a graph where a simple average of the top models in a competition gives an ensemble model with higher accuracy than any of the individual competitors.
I think that is largely the beauty of Numerai. Using adversarial agents to build a "collaborative" model. Disclaimer: Won a few bitcoin on Numerai.