ForceUser
Explorer
They aren't important. You lose nothing by not using them. On the other hand, a prestige class can enhance the story of a campaign by tying a unique group of people all belonging to a prestige class to the world.Quasqueton said:How important is it to Players to have the option to take a prestige class? Can not a Player make a fully satisfying character with only the core classes?
Quasqueton
Using the Shadowdancer as-is from the DMG is okay. Creating an organization around the Shadowdancer called the Noctus Druuth, a mysterious group of shadow-walking informants and spies, is much more interesting and flavorful.
The 11 core classes have game mechanics covered. Prestige classes are for fluff.