"Moving forward, if we want to see New Zealand teams win the competition, then playing the Kiwi teams once will be enough."
Coles understands Sanzar are trying to create a global product, but said he'd rather see a stiffer competition than a larger one.
"You want quality sides in the competition to make it the best competition in the world.
"Just keeping it simple is better. We don't need to over-complicate things."
Instead, Coles would rather go back to the old Super Rugby format where the playoffs were determined by the top-ranked teams overall.
"Yeah, you play every team once, and the top eight qualify and you're away laughing. That's the way I'd like it."
Coles hoped the players would have a stronger voice moving forward and that Sanzar would create a competition everyone can understand and enjoy; fans, media and players.