It's about time. I have been racing cars for a long time and vintage racing for about 15 years. In the last 7 or 8 years I have watched a steady decline of entrants in what I consider the really interesting stuff. My old group of specials, SVRA group 4 cars, is almost non existant. Listers, Allards,Cunninghams, all of the specials and there were hundreds made. There might be 5 or 6 cars like them in a race. Group 5 used to have 2 or 3 GT40's, now you hardly ever see one. I believe the Can Am group only has one race scheduled.
The problem with vintage racing is that there are 2 types of people involved, collectors and racers and they are not always the same people. Look at the owners that hire hot shoe racers to run their cars. Because of the prices of some of the cars that have sold, owners are afraid to put their cars on the track. Problem is, there is a Catch 22. If the cars don't race, I believe the value of the cars will go down.
Allowing copies to race will help with the size of the fields and this will be the reason they allow them. Look at the number of 40s that are complete fabrications and the number of cars that are rebuilt with virtually no original parts except maybe a front and rear subframe. Does a chassis plate make it an original? I like the road wear and the originality of an old raced car. IMHO it is the nicks and dings that make it worth something. Is a car that has had every nut, bolt and rivet replaced the same car that John Surtees drove? I don't think so.
The draw to vintage racing is the rare stuff. I don't think the promoters will have much of a show when all you see are MGs and Triumphs.
Bill