I would easily say there are twice as many standard pavement cars sitting than any roadsters that may be out there. Keeping rules as is, to try and attract that larger car owner pool makes sense.

The roadsters are neat no doubt and have a some history at the Little 5.

Hairracer44
The quick fuelers aren't "Indycar" style beside a top plate they are on a few hundred stock cars, and it's very easy to run more than a race on a motor.