The national team should just pick the players who actually want to play

No matter how good a player's skills are, they are useless if they don't play hard.
And we don't need anyone who ruins the team atmosphere, either.
Performance might drop a bit, but since there are plenty of players lining up saying they'll give it their all,
it's better to build the squad with players who are truly desperate.
How many "superstar" players were there actually during the 2002 World Cup?