"If Auckland had a smaller stadium and was sold out regularly, that is a sensible supply and demand model," Doyle said. "I think it would be an absolutely fantastic outcome for Auckland and all sporting codes and events.
"The secret is integration. If you're going to invest money you want use out of it and a return on your investment."
Eden Park, Mt Smart and North Harbour Stadium hosted small numbers of games each season but if those games were all at one venue, Auckland would have a viable stadium.
Sport and other events had to be a fan experience from the time people left home to the time they got home again.
"There was an opportunity lost before the 2011 RWC but surely because it's lost once doesn't mean it's lost forever and that's what I have been saying," Doyle added.
"Someone from Auckland should be looking to the longterm and a concerted plan for the city's sports grounds."