I don't think this is off topic, it's a good point. 10 classes is at least 5 too many.
I always thought that you dilute your own field if you give too many options. You need three classes. Inexpensive beginners class a mid level class that ties in with you premier class and of course the headliners.
By far the best racing I ever saw had only two classes. Big Block modifieds and a small block sportsman class.