I doubt much would have changed.
Still, despite the obvious presence of talent that was badly used, this French team is still far behind the previous teams they had.
It's not just the lack of a genius like Zidane, but they were weaker in other positions too. They don't have a player of Makelele's and even Vieira's quality in midfield, they don't have a player of Thuram's quality in defense, nor is Henry the same player anymore.
They lack "champions", as the Italians call players of Zidane's, Henry's or Makelele's level. Despite having players of great quality, they don't have proven winners in the team.