You know, I can only refer you to this topic:
I and others feel that they really never had any real dev<->player communication for D3. WoW communication is used as an example in the topic. Now, we understand that the D3 team is different than the WoW team, but the way that the WoW team has communicated with players throughout the years has been a completely different thing than what we've seen for D3 and WoW is a MUCH, MUCH, MUCH better game as a result of consequently involving players in decision making.
That's not to say that game development is a democracy - it's Blizzard's right to do whatever they want to do. But at the same time there's been sooo much effort by so many players to provide fantastic feedback for D3 on various forums and most of that has been ignored. We're all losing out on what could've been a much better gaming experience as a result of not having a good forum for throwing ideas back and forth because these communities are filled to the brim with real veteran players who are full of great ideas.