Actually, as a sports car and open wheel fan first, I must say I also watch NASCAR as well. Just a family tradition.
To me, the new format of winner take all is a step towards the Sports Car Club of America Runoffs format. It is a one race winner take all for the Amateur championship in different classes in the SCCA. Paul Newman said screw the Oscars as he clutched his first National Championship. He knew how hard he'd worked and raced to win it. Money helps but he was a respected racer by the pros he raced against.
I have been to one Runoffs while a member of the SCCA in 1991 and later watched the races where they could be found. Sure miss the old Speedvision. My case is that the Runoffs is the most exciting 3 days of racing in motorsports. Emulating an element of that format makes me think that the last race will be as exciting as any NASCAR race they've ever put on. Go to the bank on it, it'll be all people will be talking about next November.