Interesting distinction...
I like it when the races are identified as National or Divisional.
ProAm just does not cut it. NitroJam is just as confusing.
Like dating a girl inviting her over to see your Cyclone Fence

I know IHRA is trying to be different.
Think the Specators say HUH?
Who wants to see Amatures?
Also like the distinction Winter, Spring, Summer, Fall Nationals.
Wide World of Sports always made these exciting!
Would add a Canadian/USA Nationals, Rocky Nationals, Appalachain Nationals, Southern Nationals, East Coast Nationals...and so on!
They all should be distinctive and "Sponsored by" but do not use the Sponsor as the Top Billing!
It tells the Spectators and racers a lot with a few words.
IMHO What we have now is not working!
Dan