All I know is that the fall portion of the schedule needs to change to keep me interested. There's really no incentive for me to watch the fall schedule if things stay the status quo and not really much is at stake.
I think there needs to be a playoff system, like they have in NASCAR (with the Chase) and golf (with the FedEx Cup). The Top 32 in the standings after the US Open advance to the playoffs. Then, maybe after the Shanghai Masters, we have our first cut to 16, and after the Paris Masters, we cut down to 8 for the ATP Finals.