cheating is #1 reason and lack of teching, people all spending tons of money just to win a few bucks.these guys start in the back and are up front in a couple of laps, basicly stealing money from all you other guys that are not cheating.level the playing ground and drivers will come back.just my opinion
When you keep opening up the rules and increasing the costs to be competitive your going to lose cars. Then, they do a horrible job of teching as well and add in some favortism and bam! Terrible car counts. I like the watching the class and think its a good lower scale class but it is becoming too expensive.
As far as the sprints, they didn't necessarily ruin the track. It was awful to begin with all season. There would be a small layer of clay (maybe) but that would be gone after the first few heat laps regardless of who ran first.