"My preferred model personally is actually an Australian-New Zealand model expanding up into Asia," Mortlock said.
"The South African time zone does hardly anything for our viewers at all.
"For South African fans, it's fantastic because they can get up in the morning and watch rugby all day long.
"The reality is, though, SANZAAR is made up of all the relevant countries so they're not going to like me saying that.
"And there's no way that's going to happen either. That's been spoken about historically, but it never happens.
"I also feel like a big part of the solution hasn't been spoken about as well.
"The current status of just expanding to expand to create more content isn't the solution.
"Having proper teams and higher quality competition is paramount."
Even if that means that ultimately either the Brumbies, Rebels or Western Force perish.
"What we've probably got to have in mind is this is arguably going to be in the best interests of Australian rugby," Mortlock said.
"And secondly, the current model is borderline broken, if not broken.
"So tough decisions need to be made."
