Originally Posted by
Teriz
People want new classes because people like new stuff. Not everyone is happy with their class of choice, but enjoy WoW's game design and would like to see something different.
Also one person's problem is another person's favorite feature. So people suggesting changes to existing classes, often don't get what they want because it clashes with the dev's vision of how the class should work. In my case, I grew tired of how Shaman were designed, and I quit the game for quite awhile. What brought me back to the game was the Monk class. Another example would be the Hunter class. I find it boring as hell to play, and I would champion an overhaul of the entire class. However, Hunter is one of the most popular classes in the game, so my opinion is a minority opinion.