Well, the guys stuck in past want everything to remain as it was in 1960 or 1970 or whatever their high point in time was...same with a lot of things, not just NASCAR.
NASCAR like any another motorsport, needs to evolve but it's evolutionary pace is quite slow..
I went to the two races here in Phoenix last year, watched many of the races on TV, it's fun...I'm more of an Indy Car, F1, and road racing fan, but I've enjoyed NASCAR in recent years after not paying attention for a long time..
For a 'stock' car series, I'd love to see a US version of the V8 Supercars series...alas, it would be only Dodge and Chrysler....maybe Cadillac, since Ford and Chevy only have FWD generic sedans these days...