Star Wars Galaxies: Q's Query #16 - Advancement

This time Q-3P0 wants to know about player advancement. Specifically, talking about learning skills and gaining profession titles.
Basically, he asks:

How long should it take to "max" out a character in terms of profession?
How would you cater to the "power gamer" who plays for more than 40 hours a week?
How would you cater to the "casual gamer" who plays for less than 15 hours a week?
How do you deal with the inherited perception that "Level 50" (or whatever) is the "point" of the game?

Give your opinions here !

- Ke3PeR ~8^)>