I'll wear my flame suit for this one, just in case.
If we had the street touring classes broken down the same way (classification wise) as stock, and allow a competitor to prepare to those rules, OR prepare to stock rules, and run R comps, but allow them to compete together (Street Touring with the Stock guys)...what happens?
If the cars are close enough to compete with each other at these prep levels:
We have class consolidation leading to more cars per class:
Newbies with common modifications don't get moved to a Prepared class, if they stay on street tires
Camber challenged vehicles (like my BMW) could deal with that issue, and still compete against similar cars
Those that want to run R comps don't have to jump to SP
Those that don't want the recurring R comp bills have longer lasting options.
I haven't put a lot of thought into this, so I ask: Is it feasible?