Fact of the matter is that NASCAR is a grueling sport to follow regularly. The races are hours long and the season is pushing 10 months. People just aren't into that nowadays except diehard NASCAR fans who are used to it. It's very time consuming to follow an entire season. NASCAR is and has been in a predicament for a long time on how to obtain new fans to keep the sport alive and more or less bank on the fact that the diehard fans will not up and leave the sport because of their long time love of the series. You can't continue to stay relevant and keep people's interest by using the same old methods, especially when those methods (The Chase comes to mind), are essentially not welcomed by the die hards. NASCAR is at a crossroads with fans. Some want to go back to the old system, some love the Chase format. I'd be inclined to guess that newer fans actually like the Chase because it makes it interesting and they were never around for the old points format. Bottom line is, NASCAR needs your help. They will never make everyone happy because that's impossible. I feel like more people base their opinions from other people's opinions they either read through social media or NASCAR discussion boards like this one. Change needs to happen. Whatever changes that may be are unknown. IMO, it's not necessarily a bad thing that NASCAR is experimenting with changes. Unless you are ok with NASCAR going belly up and the sport cease to exist, whatever changes deserve at least a chance.
I think that NASCAR's problem is that these decision makers are trying to find a way to alter the original format to get more fans, but that's not really going to work. What they need to do is literally blow away all the current systems, points, tracks, everything except the cars and start over completely.
Here's my manifesto of what NASCAR really should do that could vastly improve interest
1. The season as you said is far too long, it needs to be about 2 months shorter.
2. In shortening the season, any track that has 2 races loses 1, there is no good reason to go to a track twice unless you really want to keep a certain flavour of racing prominent. (Superspeedways)
3. Races are far too long in general, barring big headliners like the Coke 600, Daytona and Southern 500s no race should be longer than 2.5 hours max, 2 hours is more ideal.
4. DROP INDY period.
5. Certain tracks that are notable for boring races would be well suited to V8SC weekend formats of 2 races of equal length.
6. If pit crews are to be used the same amount make the fuel tanks smaller and the tires softer.
7. For god's sake allow digital radios, why are we still talking on what is essentially a CB radio?
8. 40-1 point system, no bonuses, just win the stinkin race
9. As a way to spice up the racing in general, award championships at season's end for superspeedways, speedways 1.1miles and longer, tracks shorter than 1.1miles, and road courses provided there's 4 or more on the schedule
10. Scrap the chase now that there's already races within the races, no need for playoff format anymore.