Not many G League stars have come here and struggled
In fact most of them are big success ie Cotton, Jackson, Prather, Long, even Creek etc, etc
In most cases G League stats translate very well to NBL and they have more guys of this Cotton, etc level than the NBL does.
Sure there have been a couple of failures, but overall, recruiting guys who have put up good numbers in the G League is successful for the NBL clubs.
I personally would put the Aussies who play in the G League above most NBL players without NBA or Euroleague experience from a boomers point of view, especially guys like Adel who have had a sniff of NBA experience, to a similar level of Creek who is the NBL star anyway and would likely be of similar level to Creek.
Id much rather pick guys like Deng Adel over Cam Gliddon and Cooks type NBL players, in the end Adel is a 6'7 very athletic wing, averaging 12p, 3a, 5r and a good defender in the Gleague, and out performing those Giddon, Cooks, Barlow types of Aussies who are in the NBL. The fact those guys got picked ahead of Adel was a big failing,and a big reason why Lemanis had to go.
So I would look a little deeper with the G League players are garbage thinking. Quick example compare Creek and Cottons NBL and G League stats.
In general anyone with NBA or Euroleague experience should be picked ahead of NBL players without it, even if they are currently in the G League
My Team for Tokyo
Bayens/Bogut
Bolden/Maker/Landlae
Ingles/Creek/Broekhoff
Mills/Exum
Simmons/Delly
Humphries, Mathiang,Adel, Bairstow, Motum, Goulding, Kay, Green, Cotton (if naturalised in time) maybe Sobey, M-White, Noi should be pretty much the only other players considered if guys are unavailable.