There are plans announced on almost a weekly basis to revive/restructure/reinvent/rescue the World Rally Championship. I've got an idea that seems reasonably good (to me at least.....):~
Engine:~ 6 cylinder(max) with a capacity of 3500ccm (max). No turbos or traction control. Drive train:~ Mechanical diffs only. Rear wheel drive.
Body shell:~ Production model similar in style to current WRC styles with a minimum length a la current regs.
The rules would allow a manufacturer to use any V6 from their range in any suitable bodyshell ~ a V6 Astra would be allowed as would a V6 Volvo C30. Porsche could also field a team of Caymans and how about a Nissan 350Z or Chrysler Crossfire team?
All bar Suzuki of the current WRC teams could build cars, there are also a very wide range of other manufacturers who have suitable engines and models in their product range including Alfa Romeo, Honda, Toyota, Renault, Lancia, Dodge, Chevrolet, Mercedes, Lexus and BMW.
The howl of V6s, the sideways attitude of rear wheel drive, who could resist?