As a contrast, we would also be able to find players that log on too much to be considered casual, yet still haven't got a character at max level in their chosen game. This is the "stop and smell the roses" approach to leveling, with the emphasis on the journey rather than the destination. This type of player will probably take the time to read every word of every quest, engage in activities that aren't related to progression, and just generally move at a far more relaxed pace.
We think there's definitely room for both types of players, and also realize that the player's approach may depend heavily on what a particular game offers. What we'd like to find out from you this morning is how you normally approach the leveling in a new game or expansion. What factors contribute to that approach?