This years NARRC Runoffs in ITA was really light with only 7 finishers but there were 4 different kinds of car.

ITR had 9 entries with 5 different kinds of car
ITS had 10 entries with 7 different kinds of car
ITB had 13 entries with 6 different kinds of car

We have diversity here in the Northeast.
But Andy, don't take this the wrong way, you're right NE has more diversity than some, but we used to have more.

Dig back in some of the results sheets you have from when you started W2W w/ SCCA. How many IT cars in a regoinal? How many types? In NER ITS and ITB run together and I can remember 35+ car fields for that race, 20+ were ITS cars. And I can remember sitting on the grid and seeing at least 5 different models of ITS cars - RX7, BMW, Nissan, Porsche, Datsun. The ITB fields also had the same diversity - Opel, VW, Audi, Volvo, Saab. And that's what my addled brain can remember.

Sadly, this summer I saw a regional race at the same track where ITS didn't run, it was at the end of the day and with so few cars, those who did enter moved to STL/STU/STO/ITE.