I think it is better to have a Internats that represents the majority of the member of the IMPBA and attracts more than just a small group of people.
Stop and think about it. What has more prestige Winning National Champ for beating group of 60 people or US-1 for beating 10?
10 People????
I think that the KEY is to hold Trophy Trials before heat racing so people can make the decision whether to attend or not.
They will know when heat racing starts and can arrive then.
Would save a ton of time for people who do not want to either take off that much time or don't want to run for US#1.
With the Specialty events at the end, it gives all the flexibility to the contestants.
Chris:
The RC Cars have grown continuously over the years and the format that they use is similar to what you describe.
World of Outlaws, Sprints, Midgets, etc all use the heat qualifying system to the A, B, C, etc Mains. That way it is progressive to get into the run for the Championship.
As you remember, the Hydro Masters used a format similar to this and it was highly successful and the most competitive race that I have ever attended. If IMPBA decided to use that format, I would be a happy racer.
But, I love the Internats Format with Trophy Trials BEFORE heat racing.
Just want to see the awarding of US#1 mean that the person has really excelled. Not just another heat race, we have all of those during the year.