Jad asked: Do the suggested changes (the useful ones that is ) result in substantial changes to the results, or do just 1 or 2 people change?
Recalculating the BRI for the 2 AX events this year, the changes don't affect the winner in either event. TT still wins the March event and JGW still wins the June event (but his margin of victory is reduced by half). In fact none of the top 4 spots in March changed.
Very roughly, cars in A and C move down in the rankings 2-3 places, cars in M move up 4-5 places. Cars in N get hit the hardest, moving down 5-10 places. But the amount of movement is very sensitive to how bunched up the competition is.