To the OP.... I'm just as you are, kinda of torn between yes they should change it & no keep it the same..but I say keep it the way it is.
My reason is the 2nd part of your answer in your original question, for me it wouldn't be exciting to see the 29th or 30th ranked guy win & thus be rewarded for 1 great weekend & that being the last in the Tour Championship, when it's a great possibility he didn't even win a tournament all season.
I can live with it being the way it is, after all nothing in life is perfect so all we can do is go with what makes it the closest to the best, and it is imho.