Pit stops are very relevant to racing to me, but even I have gotten tired of the same narratives in NASCAR. 75% of the new car is IMSA related already, install the chassis jacks and bring on the single lug. Fueling hoses would be fine too, it's not like NASCAR's the only series in the world the pit stop can be crucial in.
There is, however, something that I'm not exactly sure how to get over. CF bodies, as long as they don't splinter and send shards everywhere, fine. Dallara being the only chassis builder? DPi's aren't as big as I think they are, Indycars aren't as small as I think they are, the NASCAR tub would probably be relatively close so supply shouldn't be a big deal, but...I think I'm hung up on the thought that the chassis builders have a hand in performance, and going spec negates that.
I think the biggest hurdle I'm having with the car itself is the "one common body" line. We went through that with the COT, I can recall the migraines from talking to people about it (when I had some to talk to), and that was a big reason Gen 6 had brand specific panels. Yeah, I know that everything between the pillars is the same, but the panels that are different did change how people looked at them. And now from how I'm reading it (interpretation may be wrong, my idiocy seems to have become advanced of late) NASCAR's gonna rely on just a sticker pack to distinguish the brands.
I would like to give a few thoughts though. 1) Pull a WWE and operate outright as NASCAR instead of trying to maintain the acronym. 2) If these cars ARE going to be almost completely spec, as it would seem, then they need to be something other than a "stock car" because stock was left back in the 70's somewhere. 3) Don't bother with the car names. Chevy, Ford, Toyota, anyone who may join. If the engine is gonna be the only difference, go by that. Otherwise *builder*-Dallara.
That said, I may be way off base and off in my own little world, so take what I say with a grain of salt.
C. Easiest and fastest relation they could probably think of.