I have no studies to back this up but my feelings on this countdown is this.
Aside from the racers, I think that the only people who care about the year end champion are those on these message boards. In other words, a base that numbers in the hundreds. Maybe a thousand. I think that the average, and even above average fan only care about who wins at that race where their butts are in the seats. The reason championships work in other sports (World Series, Super Bowl, etc) are because these teams are the best of the best against a finite pool of competitors. Each team gets the same number of chances to beat "team X" throughout the regular season as any other team.
Outside of National Dragster, are there any sponsors singing the tunes of their driver winning the Mello Yellow championship? No, it's a few bucks and a trophy to put in the case. That's not to say it's not important to the drivers, I'm not saying it's completely meaningless, but you could take away all points and you are still going to get the same number of fans in the seats.
Personally, I think it would be cool to have a biennial event hosting the top cars from every sanctioning body around to world for an Olympic type competition, at a different location every time.
The NHRA product as it stands sells itself regardless of points and quirky qualifying rules. It's one of the things Wally had right, it's about the cars, and NHRA needs to get back to focusing on that.