@ KET
Rankings are an accumulation of past results, which is ineffective for ranking current forms of teams, in my opinion. For example, I think it is the USA, Serbia, France, and so on rather than the current standing.
The Asia Cup, on the other hand, has unquestionable bragging rights for Asian teams. Every Asian team wants this chip, but yes, I understand the sentiment of Oceania teams not being as serious. It is a shame that the previous Oceania Championships that NZ and Australia won are basically history. FIBA should find ways to improve the commitment of the Oceania teams.
As far as I know, most teams care about continental championships. For instance, although the EuroBasket has no bearing on the World Cup or Olympics, European nations always send their best teams. I think it is because of the history tied to Eurobasket and the important connection between these teams. Oceania teams don't have much enthusiasm for the Asia Cup. Maybe changing the name to Asia-Pacific Cup or Asia-Oceania Cup could be a good first step.
There is no FIBA Break in the NBA or European Leagues. Throughout the WC qualifiers, it has been Team Bs or Cs for top tier teams, which even resulted in upsets last window. I don't think the Euroleague and FIBA will have any agreement anytime soon regarding player availability on windows, those two entities have history.
https://www.eurohoops.net/en/national-teams/1275662/tony-parker-we-have-been-paying-for-the-wars-between-euroleague-and-fiba-for-years/
https://www.lawinsport.com/topics/item/an-overview-of-the-dispute-between-fiba-euroleague-is-there-an-end-in-sight?category_id=115