lol well the slowly releasing is all part of marketing. Release enough to generate buzz and interest but still keep some excitement when the thing is actually released. And also keep some flexibility in your changes in design if any does need to be done. I'm actually SUPRISED they decided on "five" classes, rather than TBD
I do agree the witch doctor is alot like the necromancer but in a way I think with so many of these types of games before, the class types really are a mix of previous ones with 2 or 3 unique abilities at most. The rest is balance and graphics/presentation issues.
And I forgot all about the lack of gender choosing in previous diablos before they mentioned it LOL. Sorta silly but then again thats a whole different issue. I just hope they somewhat care about bots and exploits and stuff.