They should do it regionally.
South: Ant, Ja, Steph, etc
East: Brunson, Donovan Mitchell, KD, etc
Midwest: Trae Young, LeBron, Tatum, etc
West: Dame, Harden, etc
Players would have more pride in repping for where they're from and showing who produces the best hoopers, with folks tuning in with a rooting interest in the games automatically.
Foreign players could do a foreign east vs west type thing, where everything from west Europe(France/Spain/etc) to the Caribbean is on one side while all the eastern European boys on into Asia are on the other
Everybody gets to rep where they're from forreal, not just what country they're citizens of