I have noticed a tendency of weaker players to move their queen out very early (e.g. move 2-5), and conversely, a tendency for strong players to move their queen much later (usually later than move 5, but often not until move 7/8/9 or even later).
What is the earliest the queen is moved in any strong, modern opening? By strong modern opening I mean only those used by grandmasters in competition under classical time controls (i.e. meaningful competition games, and no blitz/bullet games).