I wonder if blizz will make a diablo 3 expansion with the druid and other (insert class(es) here) because the shape shifting abilities of the druid in diablo 2 is the main thing that made the game interesting to me in the first place. It may be wishful thinking, but to me personally, druids were the funniest class to play.
Q u o t e: Jay Wilson has already hinted that the Necromancer would be making a return, and that they designed the Witch Doctor with that in mind.
I've seen this said quite a bit. We're not specifically designing the witch doctor to leave room for a necromancer class. We're focusing on this game and making the classes fun. It's more of a case of, the witch doctor just isn't similar enough that it would prohibit us from adding a necromancer. Were one to be added in an expansion. Were an expansion to be made.