I dont know who is making decisions up there but it seems like the wow and sc2 teams are making bad decisions regarding their games... I hear 4.0 has ruined all melee classes damage and buffed all casters, idk how this how come to be? Also i just remembered how SC2 dev team left out chat channels???? How did they decide on that. I really hope D3 has chat channels or this game will not sell as many copies and players will be furious.

Heh, well 4.0.1 was essentially a complete overhaul of all classes, introduction of new resource mechanics, changes to glyphs, removal or conversion of many stats, those stat changes translating to enchants, gems, and items. It's a huge amount of work for class balance. If it were perfect out of the gate that would be worrying, as certainly some foul magics must be at work.

Regarding chat channels, they weren't a launch feature but are indeed coming, and the tech will be there and waiting for Diablo III, I'm sure.