Two comments.

1. The RCU rules may look ridiculous to the outsider, but it's the only club I know of that fields several heats of FE 1/8 scale at every club race.

2. Just because you have the time/money/interest to build an 1/8 scale doesn't mean you'll be able to drive it well in traffic. Like every other class, you have some great drivers and some at the other end of the bell curve.