What if the World Rankings system is changed from best 10 tournaments in the past 12 months to the following:

(A) best 8 in the past 12 months

(B) best 15 tournaments in the past 18 months

(C) best 20 in the past 24 months

(D) stick with the original best 10 in the past 12 months...

Which of the above would be better for players? which is better for fans??