Brumbies to lead Wallabies' changing of the guard ahead of World Cup, says Joe Roff

He also dismisses suggestions the ACT Brumbies' semi-final performance has hindered their selection chances.

Part of that change should see Tom Banks playing in the Wallabies' No.15 jersey because "he's the complete package" at fullback.

The Brumbies will have their last chance to impress Wallabies selectors when they join the national squad for fitness training in Brisbane later this week.

It's the Wallabies' final training camp on home soil before they play four back-to-back Tests against South Africa, Argentina and New Zealand in a shortened Rugby Championship.

Wallabies coach Michael Cheika will name his squad for the series on Wednesday or Thursday, before leaving for South Africa on Sunday.

Roff believes leading Brumbies have done enough to earn the right to be given a Wallabies opportunity.

"The form of individuals in the Brumbies this year has been compelling," Roff said.

"Players have shown themselves to be world class and deserve to be wearing the Wallabies jersey as a result."

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The Brumbies' stellar campaign was soured by their 39-7 loss to the Argentina Jaguares on Saturday.

Some critics suggest the Brumbies' Wallaby contentions have been damaged by the one-sided match, but Roff says the performance shouldn't be singled out.

"If the performance against the Jaguares is used as a reason not to pick Brumbies players then by the same reasoning you could not pick any Rebels, Waratahs or Reds players," Roff said.

They were the only Australian team to qualify for the finals and won seven consecutive games to reach the final four.

The Brumbies won eight of their last nine games during the regular season. Meanwhile, the NSW Waratahs and Queensland Reds won three and the Melbourne Rebels won just two matches in the same period.

Cheika has favoured members of the Waratahs team he guided to the Super Rugby title in 2014 but Roff believes it's time for a changing of the guard.

"There needs to be if the Wallabies are truly seeking to perform well at the World Cup," Roff said.

"We've seen in past World Cups that for the teams that do well, they have the courage to pick players who may not have much Test experience but have shown themselves to have world-class abilities.

"You never know where the selectors' minds are at but really, there should be 10 or more Brumbies in the squad. Some of them are going to pick themselves, like the front row."

The Brumbies' front row of Scott Sio, Rory Arnold, Folau Faingaa and Allan Alaalatoa should be Wallabies certainties, while Sam Carter and James Slipper have a nervous wait until Cheika's announcement.

"Rory Arnold and Sam Carter have really shown themselves to have exactly what it takes at that level, to not take a backwards step and take on the best in the world when it comes to World Cup time," Roff said.

"I think their prospects aren't damaged by the loss [against Jaguares]."

Faingaa has been earmarked to be Wallabies' first-choice hooker after a stunning season with the Brumbies. The No.2 turned into a try-scoring machine over the season, during which he scores 12 tries.

"It's an anomaly that he scores so many tries as a front-rower," Roff said.

"Hooker hasn't been a comfortable or easy selection for the Wallabies since Stephen Moore. There's a real opportunity for him to put a stamp on that position."

Meanwhile, Tom Banks is competing against Kurtley Beale to replace the sacked Israel Folau as Australia's starting fullback.

His superhuman speed, consistent line breaks, kicking game and knack of finding the tryline has put him on the cusp of claiming the No.15 jersey.

"Tom has shown he's the complete package at fullback," Roff said.

"Not detracting from Kurtley, who is a very gifted talent. Tom has all facets of the game from his positioning, to kicking, to defence, to his ability to break the line and to find opportunities.

"It's such an important position in the Wallabies side and he deserves an opportunity there."

Former Brumbies scrumhalf Nic White is also back in Australia pushing for World Cup selection.