cars don't show up at the track in volume if they are percieved as mid pack or slower.
Exactly the point if you pull the overdogs back just a click you could be back to four or five different models competting every weekend. I certainly don't dislike the E36 they have made me loads of money going back to work on older ITS car to stay competitive. The issue I have with them is the car that show up and is marginally prepped and marginally driven and overly competitive with competition that is at it's top level of development and driver skills. I expect the e36 to get faster every year as they get developed and that's not a bad thing. It is a bad thing if the numbers on the car end up so far out of the perfomace envelope of the class that it kills of the other competitors that aren't interested in driving a BMW.