Smith, Thurston and Slater, all realistic possibilities for immortal status, have won grand finals and conquered all with Queensland. But at age 30 in 2017, it's doubtful all three would be around for the next cup.
However, it's not just the Kangaroos who've been sprung into action by the Kiwis' heroics under Stephen Kearney in 2008.
Sonny Bill Williams walked out on Canterbury before the last World Cup began, and in contrast to his ever-growing list of achievements, he's never even won a test match with the Kiwis.
A winner of the Rugby World Cup with the All Blacks in 2011, Williams is hoping his 11th hour backflip to play for the Kiwis will make him the first dual international to claim cup victory in both codes.
Kiwis coach Kearney is also on the verge of World Cup greatness. If his team can defend their title, he'll join Australians Bob Fulton and Harry Bath as the only coaches to oversee two cup wins.
Fulton's record of four cup appearances as a player and two as coach make him untouchable as rugby league's most dominant figure at this level.
But Kearney, who played two World Cups for New Zealand as a player (47 tests in total), can create his own legacy as one of the game's most successful international player/coaches.
As it was for Ricky Stuart after 2008, anything short of victory will be the end of coach Tim Sheens' Kangaroos career.
The tournament kick-off between Australia and England in Cardiff next Saturday is a major test of credibility for the Brits, coached by Steve McNamara.
Great Britain has won three World Cups. The last was way back in 1972 and going it alone, England's trophy cabinet is empty.
They were completely outclassed back in 2008, but on home soil and with the Burgess brothers, James Graham and Gareth Widdop giving them a strong grounding in NRL experience, England are capable of pushing Australia and New Zealand.
There's no escaping the fact that the rugby league World Cup is at best a three-horse race.
However, the dramatic increase in Polynesian players in the NRL over the past decade has given the tournament rejuvenation and a unique atmosphere.
And there shouldn't be any of the embarrassing 100-plus scorelines that marred the last British cup in 2000.
- AAP