I think Andy is trying to keep the pot up by doing the crossovers. What would be nice is if separate points were awarded after the event. That is payouts based on overall finish, but points awarded according to the division. Therefore, say a 10th place finish by someone registered in the BM100 would receive a cheque based on the overall field, but would receive 200 points as the highest registered BM 100 finisher.

May be too complicated and confusing though