Ya, it may be cool if there is interest around the country...but, not everyone travels to race around the country. We need help locally before we worry about the race turnouts around the country. I think cali, and florida, etc have a much better turnout for racing than we do, so how can we compare to other states around the country?
Besides, you said you wanted this for the "southwest series." Last time I checked, that race does not go around the country.
If you want to make 1/8 easier for people running the southwest series, I say adopt a spec motor class.
just my .02