The only reason they get away with that "spirit" is due to the BTTC not being the pinnacle of British Motorsport.
The V8's here are the pinnacle of Australian Motorsport so they have politics. The V8 Utes get away with a lot more contact and mostly just say "it happens, I'll get him back next week (insert evil laugh here)"
I think a touring car class would be more popular. Could still have the Holden and Ford factory backed cars. Limit power to weight ratio and get it on.