I’m getting back to this thread extremely late, so forgive me that I didn’t read every word.
One thing to keep in mind, in the mid-2000’s to the mid-20 teens, the teams spending was out of control. The teams wanted NHRA to do something to help. So they put a freeze on all development, and that’s where the new product approval process came from. Teams/manufacturers can still try to make improvements, but they have to be approved by NHRA first. It has greatly helped the teams with spending.
ANY change (even a change to slow the cars down) that is made costs money. A lot of times it’s a very large sum even for the smallest of changes. The way this sport is built, with allowing anyone to put a car and team together to come race, it’s imperative to keep the costs in check. If there were wholesale changes to cars, or the engines, it would obsolete many parts and we would lose more than half the field because they just couldn’t afford to change.
The sport is in a major catch-22, so you either make a change and cost a lot of money at the expense of participation, or you stay status-quo and hope more teams find the funding to participate more (that’s a whole other conversation).
At this time I don’t think there is a right answer, and I think a lot of people inside agree with that.